So with 1.7 just being released, you'd probably think that you wouldn't hear a THING about 1.8. But never fear! Notch has posted some things about 1.8 already!
'NPC villages- Well, Could he be saying this as in MÉLLINARE mod?
'Randomly generated dungeons- Might be like Legend of Zelda temple style dungeons?
'New biome code- More biomes...
'Fully working Creative Mode (and individual admins can enter Creative Mode on a Survival Mode server if they choose)- Not sure what he means by this, we'll have to find out then. 'Critical hits- Notch did say he would make combat more fun.
'Sprinting- A feature I've long awated!
'More farming options- Making farming more fun with many new options. Might be inspired by DrZhark's Mo' Farming mod...