Warhammer 40k 11th Edition: Every Major Rules Change You Need to Know Before June

The grimdark future is getting a fresh coat of bolter-scorched paint. Warhammer 40k 11th Edition is officially dropping in June 2026, and if you haven't been keeping up with the reveals, you're about to get a crash course from your friendly neighbourhood Servitor Scribe. Whether you're a grizzled veteran who remembers when Land Raiders were actually scary or a fresh-faced recruit still figuring out which end of a bolter to point at the enemy, the 11th Edition changes are significant enough that everyone needs to pay attention.

Games Workshop has been drip-feeding us rules previews for months, and the picture is now clear enough to give you a proper breakdown. This isn't a complete overhaul — your existing codexes still work at launch — but the core mechanics have been meaningfully reworked in ways that will change how you build lists, play missions, and think about positioning. Let's get into it.

The Armageddon Launch Box: Blood Angels vs Orks

Before we dive into rules, let's talk about the box that's kicking everything off. The Warhammer 40k Armageddon starter set is reportedly the biggest launch box in the game's history, pitting Blood Angels Space Marines against Orks in a conflict that should feel very familiar to anyone who's read the old Armageddon campaign books.

The box includes 23 push-fit Space Marine miniatures — a Captain with Relic Shield, Librarian, Jump Pack Chaplain, Ancient, Intercessors, Vanguard Veterans, Eradicators, and a Land Speeder — alongside 38 Ork models including a Warboss, Bigboss, Bannernob, Painboy, Weirdboy, Boyz, Gretchin, Wartrakk, and the new Big Mek Dakkarig. That's a lot of plastic for your money, and the models are generic enough that your Space Marines can represent any Chapter you like.

The rumoured release date is June 20th, 2026, and pre-orders are expected to open shortly before that. Mark your calendar.

Modular Detachments: The Biggest List-Building Shake-Up in Years

If there's one change that's going to reshape competitive play more than anything else, it's the new Detachment Points system. In 10th Edition, you picked one detachment and that was your army's identity. In 11th Edition, you can combine multiple detachments using a pool of Detachment Points (DP).

Here's how it works: a standard 2,000-point game gives you three Detachment Points to spend. Each detachment costs between one and three DP. New, specialised 1 DP detachments are being introduced alongside the existing codex detachments, many of which will cost 2 DP. Over 70 new and updated detachments will be available at launch.

What does this mean in practice? You could run a 2 DP detachment for your core army identity and then bolt on a 1 DP specialist detachment for a specific tactical flavour. It opens up list-building in ways that 10th Edition simply didn't allow, and it's going to create a genuinely interesting meta as players figure out which combinations are most powerful. Expect the first few months of 11th Edition to be a glorious, chaotic mess of experimentation.

Terrain as Objectives: The Battlefield Just Got More Important

One of the most visually striking changes in 11th Edition is the replacement of circular objective markers with actual terrain pieces. Instead of placing tokens on the table, the terrain itself becomes the primary objective points. This isn't just an aesthetic change — it fundamentally alters how you think about board control.

Games Workshop is releasing a Terrain Area Set with 16 double-sided card templates to standardise setups, and pre-painted 40k terrain is also on the way. The practical effect is that terrain placement becomes a strategic decision in a way it never quite was before. Controlling a ruin isn't just about getting cover anymore — it's about holding the objective.

Cover Gets a Serious Rework

Speaking of terrain, the Benefit of Cover mechanic has been overhauled. Previously, cover buffed your armour save. In 11th Edition, it instead debuffs the enemy's hit roll. This is a subtle but important distinction: it means cover is no longer negated by invulnerable saves, making it genuinely useful against elite units that previously ignored it entirely.

The catch is that only Infantry, Swarms, and Beasts benefit from this reworked cover when inside a terrain area. Vehicles and monsters are out of luck, which makes thematic sense — a Carnifex doesn't exactly crouch behind a wall.

Concealment: The New Anti-Alpha Strike Rule

One of the most community-requested changes over the years has been some protection against brutal first-turn alpha strikes. The new Concealment rule addresses this directly. Swarm, Infantry, or Beast units within a terrain area that did not shoot in the previous turn cannot be targeted by models more than 15 inches away.

This is a significant defensive buff for infantry-heavy armies and means that aggressive deployment into terrain is now actively rewarded. It also changes the calculus for long-range shooting armies, who can no longer simply delete units sitting in cover from across the table on turn one.

New Keywords: CLEAVE, HEAVY, MOBILE, and CLOSE-QUARTERS

11th Edition introduces several new keywords that add tactical depth without bloating the rules:

CLEAVE: Grants additional attacks for every five models in a target unit. This makes melee against hordes dramatically more effective and should give horde armies something to think about when they're on the receiving end.

HEAVY: Allows a +1 to hit if the unit moves up to 3 inches, is unengaged, and wasn't set up this turn. Rewards careful, measured movement over aggressive repositioning.

MOBILE: Allows units to move through dense terrain like ruins and walls. Expect this to appear on fast, skirmishing units.

CLOSE-QUARTERS: Replaces the PISTOL keyword, indicating weapons usable in close combat proximity.

Close Combat Changes: Engagement Range and Charge Targeting

Melee players, rejoice — and also pay attention, because the changes here are meaningful. Engagement range is now 2 inches instead of 1, which makes it easier to wrap units and harder to escape combat. More interestingly, players now choose the target of a charge after rolling the charge distance, which removes a significant amount of the guesswork from aggressive plays.

Units also pile in before rolling for attacks, and the Fights First sequence now begins activations with the turn player. This changes how Heroic Interventions work and will require some adjustment from players who've built strategies around that interaction.

Battle-Shock Gets Teeth

The Battle-shock mechanic was present in 10th Edition but often felt like a minor inconvenience. In 11th Edition, it's been significantly strengthened. Units that fail a Battle-shock test must now pass a subsequent test to regroup, rather than the condition clearing automatically at the end of the phase. This makes Battle-shock effects persistent and genuinely threatening, especially for armies that can stack morale pressure.

Mission Generation: Your Army's Goals Are Now Unique

The mission system has also been reworked. Primary objectives are now generated based on the armies in play and their Force Disposition — a classification that falls into one of five categories: Take and Hold, Purge the Foe, Disruption, Reconnaissance, or Priority Assets. This means both players may have different primary missions based on what their army is built to do.

It's a clever system that rewards thematic list-building and should make matched play feel less formulaic. Whether it holds up in competitive environments remains to be seen, but the concept is sound.

What Stays the Same

It's worth emphasising: your existing 10th Edition codexes are valid at launch. Games Workshop has been clear that this is an evolution, not a revolution. The core rules are being streamlined and improved, but the faction-specific rules you've been playing with aren't being thrown out. New 11th Edition codexes will roll out over time, with Space Marines and Orks getting theirs first, followed by rumoured early releases for Adeptus Custodes and T'au.

The Verdict: Get Excited, But Stay Flexible

Warhammer 40k 11th Edition looks like the best version of the game in years. The modular detachment system adds genuine strategic depth to list-building, the terrain and cover changes reward tactical positioning, and the new keywords add flavour without overwhelming complexity. The Armageddon launch box is a fantastic entry point for new players and a great excuse for veterans to expand their collections.

The 12-hour GW livestream on May 25th, 2026 will reveal the full rules, so keep your eyes on the Warhammer Community site. Until then, start thinking about which detachment combinations you want to try — because the meta is about to get very interesting indeed.

For the Emperor. Or Gork. Whichever one you prefer.