It is in fact NOT up to date. As of the last update, there are not 325 items. In the devkit, the primary game mode (PrimalGameData_BP) still only has 325 elements under the Master Item List.
Sooo… if I did release an updated version of my mod, and said it was current, all those new eggs and what-not, would not actually be in the game. Because the item list on my mod does not have the ability to even add the eggs in, since they are not in the DevKit yet. Hopefully they DO pose an update for when the DevKit is updated with the new files though.