Personally, I think the biggest change there is Gift of the Earthmother's effect on Rejuvenation and Lifebloom. Spell Haste will, again, cease to be a useful stat for Druids, but I'm not complaining. With 1 second Lifeblooms we can potentially keep 6 people fully stacked, mana permitting.
Replenish just doesn't strike me as that amazing. Rejuvenation will only tick if the person is at less than maximum health. That's great for Warlocks, Ret Paladins and Tanks, but no one else is consistently below maximum health enough to really benefit. On most fights where they will be, Flourish will probably be cast over Rejuvenation.
Edit: Bah, beat to the punch on my first paragraph.
Gift of the Earthmother actually seems over-powered to me. I think it would be better as .05/.1/.15/.2/.25. There are two reasons
1: Spell haste would remain useful to us. This is important, because having stats that don't help your character cause poor scaling issues (which is one reason why druids and paladins fall behind priests and shamans in TBC raid healing).
2: We are over-reliant on lifebloom for healing now. The proposed .5s GCD reduction would ensure it would stay that way. .25s would keep a better balance with our other healing spells.
Several people have argued that spell haste is already pretty worthless for druids. I disagree. Having spell haste does two very nice things for you
1: You have a lot more wiggle-room in cycling four spells. In reality, most of us switch to three spells when we are running around or things get complicated. It is one thing to rotate between your lifebloom_Tank1 lifebloom_Tank2 lifebloom_Tank3 etc macros and quite another to do something like lifebloom_Tank1 lifebloom T...oh crap! wait rejuv swiftmend...grrr...which lifebloom I on again? lifebloom Tank1...decurse!!!!....etc etc. Without some serious spell haste, I doubt most druids are casting four spells and getting back around to restoring the lifebloom on the MT. There just isn't enough time to cover up for your ~.25s reaction times, shifting fingers, and the time it takes to switch targets.
2: You are faster. Get 150 haste, and your GCD is down to 1.35s or so. That rejuv+swiftmend now goes off .3 seconds sooner, assuming you were in the midst of the previous spell's gcd when you decided to use this combo. Needless to say, this saves lives and wipes.