i heard they are giving you a new form in cataclysm. it kinda depends on race though...
it will be night elf form for resto druid night elves, tauren form for resto druid tauren, worgen form for resto druid worgen, and troll form for resto druid trolls.
i could have sworn i heard them say that tree form will be a CD ability, and we will actually have druids in humanoid forms in cata. you can finally show off your armor!