The birds move to the south, and some stop for singing:

Quote Originally Posted by Birdy
I heard today that GW have supposedly already made a plastic treeman for the new Wood elves, but that VC, Empire, DE and Dwarfs will supposedly get new books before the WE's.

The treeman, however was said to be on the new monster base and about as tall as the Ogre Thundertusk's banner, and that it stylewise is more living brushwood-forest thingy than an actual anthromorphic tree. Anyway take with a grain of salt as always.
That sounds like a release similar to the Zombiedragon/Terrorgheist is possible.