The two January Dataslates we announced here several weeks ago, finally have pictures leaked for them. The dataslates are the Tyranid Vanguard and the Tryannic War Veterans.
Here is the rumor we had from before, in the second week of December.
-Codex Dataslate: Tyranid Vanguard
advanced force of lictors, genestealers and more
-Codex Dataslate: Tyrannic War Veterans
Chaplin Cassius and his elite forces
There are more pics here as well, some of a couple new box sets, the limited edition covers and more. These all come from the January White Dwarf.