i thought this could be a thread where people could update on the snapshots every time minecraft release a new one

e.g In minecrafts latest snapshot (13w05a) they have added snow steps which are like a slab but 2 pixels high,
http://i2.ytimg.com/vi/axd513UVgzk/mqdefault.jpg (Unsupported image host)

They also increased the range of the beacons and changed a few thing there.

Also they de-nerfed bonemeal an crops from the last snapshot

If any updates come you van post them here