This is a codex for the rulebook we have spent quite a bit of time on. Please familiarize yourself with the rulebook before asking questions.
Rulebook found here: http://www.dakkadakka.com/dakkaforum/posts/list/499585.page
Just finished up the Tyranids Codex. Here are some of the major changes:
-Useless options removed from Hive Tyrant, a few new ones added.
-Tons of options added to the Tyranid Prime.
-Invul save reduced to 5+ on the Swarmlord, but always present.
-Tyrant Guard can be purchased for Tervigons.
-Tons of options added to Warriors. A single entry combines Warriors, Shrikes, and Raveners.
-Tons of options added to Gaunts. A single entry combines Termagants and Hormagaunts.
-Tons of options added to the Carnifex.