Warhammer 40,000 10th edition is launching June 24th 2023
Starter box is Adeptus Astartes vs Tyranids.
Promotional art will show them as Dark Angels and Hive Fleet Leviathan
Dark Angels will receive a model of Lion El'jonson
Tyranid players will receive a new model called an Apex Swarmlord
Narrative does not appear to be a timeskip but expanding on events elsewhere while the Indomitus Crusade battles the Necrons led by the Silent King. Arks of Omen: The Lion will be the first step in a longform narrative chain tying both galactic conflicts together.
Core rules are streamlined
Psychic Phase and Command Phase are combined
Toughness is now only on datasheets with a [Heavy Armour] keyword ability. E.g Terminators, Rhinos, Dreadnoughts etc. Generic troops now only roll to hit when attacking and save when defending.
Armour Pen. and Invulnerable saves are unchanged.
Crusade is being simplified and behaves closer to Age of Sigmars Path to Glory
Detachments, Battle forging, Stratagems and CP generation have all be simplified or reworked
Game is intended to be faster, with smaller units and a much bigger emphasis on terrain
Along with the start box there will be a new series of terrain intended to scale from small to medium to large scale games
The core rules will be free online with two variants. "Narrative" and "Competitive"
There is a codex coming for Dark Admech and one new Xenos race
A second wave of Votann along with a updated codex is expected to launch in September
The way Space Marines will receive a codex and rules for Chapters is changing completely and will be explained in a special White Dwarf releasing in May 2023 and closer to release on the Warhammer Community website
The new edition will also see GW retiring the current range of Texture Paints and they will be replaced with new products using new materials intended to be another Contrast Paint style product to quickly allow beginners in a partnership with 'Screen Products Limited'