1. Will 1.8 feature new additions to the Nether? (Ores, or crafting recipes to make it less boring).
2. When will 'compressed' Coal and Redstone blocks be introduced? (You find much more coal than you find diamond, and that has a block).
What I wish to know ASAP is how the town borders works, I'm talking about what Notch said a few weeks ago about the need to make town borders visible but not modifiable (i.e. not blocks) and the territory claim thing.
I'm curious to find out about NPC village stuff:
-Will villages be dynamic (grow/rebuild) or created during world gen and static?
-What kind of NPC variety will there be (form and function)? Multiple skins, wear armor?
Other misc questions I've heard that are good:
-Will hunger be annoying (have to eat more than once or twice in a game day)?