I've been looking at the MMOChampion and such and (unfortunately) have found out that Resto druids will not be getting any new spells, but instead tweaks to their current spells.
As much QQ as this may or may not sound, we resto druids are VERY jealous at every other class/spec getting brand new shiny weapons (spells) and us druids are just getting changes on our current ones.
With the Cataclysm previews out, I can say that resto druids in particular will be lacking some utility for Arena. As they do already in 5's. Resto druids aren't particularly amazing at 5's and mandatory (somewhat) like Shamans for their heroism.
As Mages will get a passive heroism/bloodlust-like spell, and priest will be getting Life Grip (lolgrip), and Deathknights will have some sweet new and more literal version of the mages Counterspell etc. etc. Druids will be stuck with just tweaked out spells when in (Cooldown-ed) Tree of Life.
Instead (if I may) suggest some of these spells that will get resto druids in the competition of utility.
To not make this wall of text somewhat boring, I will add some names to these spells.
Mend Soul: This spell allows for the druid to Mend you or your targets soul as he or you take damage and reduce it by 50% if below 30%, and by 25% if above 50%. This spell last 6 seconds.
Moonlight Tranquility: Reduce damage input of a target by 50% while dividing it throughout nearby party or raid members
Blooming Seed: Grants the player under this spell 10% damage reduction while gaining 40% HP back from damage dealt from last 6 seconds, 1 minute cooldown.
••Example: Death Knight hits you for 4000 with Scourge Strike. You have 400 of that damage reduced in addition to gaining 1600 HP back••
Nature's Reserve: The druid reserves 15% of all heals casted on him up to a total of 7000. The druid can cast his Reserve even if silenced at the cost of no mana. 3 minute cooldown.
Cyclone of Protection: The druid engulfs a helpful cyclone on a friendly target negating all incoming damage while healing the target by 25%. Last 6 seconds. 45 Cooldown.
That is the end of my constructive suggestions. Please Blizzard, us resto druids would like a shiny new weapon(spell) to brandish around.