There's no rest for the folks at Mojang as they continue to dedicate their time and resources to adding new stuff to Minecraft.
Today, the developer put up a new snapshot (that's technical jargon for 'update') for this week, which includes a bunch of new additions to the game. It's not a lot, but the incremental updates they add each week tends to add up.
In addition to bug fixes and balance changes, the update includes a new jungle-specific mob that can be tamed, kind of like wolves. Additionally, skeletons have new AI and new behaviors, there's a new flame item, and a new experience item in the game's creative mode.
The snapshot can be downloaded from the following links:
Client: http://assets.minecraft.net/12w04a/minecraft.jar
Server: http://assets.minecraft.net/12w04a/minecraft_server.jar