- new half blocks of wood and cobblestone
- new save format, using less files, loading levels 7 times faster! also worlds will be named , not World1/2/... anymore
- new block, red color, will act like redstone (carry signal) but also work as repeater and a programmable delayer!
- security patches (assuming no more for pirating!), don't care, I own original

Also, show at GDC in blue shirt, meet Minecraft staff and you will get this one for free: