0.3, what we know so far:

Basically confirmed:
>act 4 and with it more zones/bosses
>Kingsmarch (hub city of act 4, most likely with similar mechanics as settlers league)
>TotA as the 3rd ascension mechanic and new late-game farm
>a league mechanic with new crafting, juicing and pinnacle content
>more ascensions
>full rebalance of bad skills/ascensions and the tree

Speculative:
>Druid and transformation gems
>Shadow, dagger and mine/trap support
>Complete re-balance of player and monster movement speed
>Expansion of previously introduced mechanics (more atlas nodes)
>On the fly switching between KBM and controller
>Auction house trading
>Endgame/Tower revamp

Are you hyped or is it too little too late?