So that's how that spider got in!
I started a new map and built a 3 block high house without a roof to keep out mobs, but let me know when it was going to be daylight. I got killed while playing with dyes.
I guess I'm gonna have to put a roof on it.
These are some bugs I've found...
lag spikes,
placing minecart tracks doesn't work right
you can place torches on the bottom of blocks, and they just float there.
The tool health bar looks like it's been changed as well.
EDIT: Yeah, I just got 60 dirt from a wooden shovel. It would only giving you 33 before.