The Tyranids are unlike any other in the galaxy. Their hive mind, insatiable appetite, and relentless pressing onward sets them apart. They're also ever-evolving to the task at hand. That being the conquering of every planet possible. Check out how they're adapting soon with these new previews.
From the article:
The release of the new edition of Kill Team marked the start of our campaign into the hellish Octarius Sector, and a bad situation escalates in War Zone Octarius – Book 1: Rising Tide, available to pre-order this Saturday. The Tyranids of Hive Fleet Leviathan are beginning their invasion (thanks to former Inquisitor Kryptmann’s shenanigans) in unfathomable numbers.
The constant carnage has forced the Hive Mind to adapt its forces in all sorts of ways – such as the new Synaptic Link abilities – and now Rising Tide’s Codex Supplement: Leviathan is here packed with rules to help you consume the Octarius sector. New Relics, Warlord Traits, and Stratagems are on hand to power up bioforms big and small, and combined with Codex: Tyranids they’ll make your swarm more terrifying than ever.