If you follow Notch on Twitter or on his blog, you can get sporadic insights into Mojang's continued work on Minecraft. Minecraft 1.4 introduced tameable wolves to the sandbox game, and with 1.5 we seem to be getting some fancy weather effects - including snow. Mojang released the following video from the upcoming patch, and it does look sweet - I am not sure I dare to watch it again though, since I can feel that Minecraft-itch setting in again...