DPS is going to change. No longer can you simply Mangle and then Shred to maybe 4 points, maybe 5 points. All of a sudden Rake is quite viable. And Tiger's Fury means something! Not that you'll have to dredge it out of your spellbooks; it's instant, no cast, no global cooldown. Just macro it to your favorite ability (or all of them!) and you'll have it up as often as is relevant to you. Obviously you don't quite want to do that if you're taking King of the Jungle, what with all that wasted energy, but I'm not so I probably will for a while at least.
A good post about the new DPS cycle is over at Of Teeth and Claws, so I won't try to repeat all of it. Basically, our DPS cycle becomes more of a priority list. The simplified version:
1. Tiger's Fury
3. Savage Roar (on more than 2 points only)
4. Rip (on 5 points only)
Basically you want all buffs and debuffs up, and if they are (or on cooldown in Tiger's Fury's case,) Shred. The start of your rotation should look like this:
Tiger's Fury + Mangle (macro'd!)
Savage Roar (only if Mangle crit)
Savage Roar (only if Mangle didn't crit)
Shred to 5 points
Obviously without Savage Roar before level 75. They should call it Hack and Slash to match the rhythm of Slice and Dice, but whatever.
I ran some DPS tests with a rotation similar to this and found I was doing about 940 DPS, which is a solid improvement despite no longer having Omen of Clarity at my disposal. I no longer expect to be both my guild's top tank and DPS. That's fine with me.
With the patch a lot of other preparation needs to be made. For example, I need to back up my macros because they will be hosted server side now, and I don't want the patch to destroy them. I have also updated my loot lists for my Druid and Hunter, based on new spreadsheets and Toskk's updated method. I still have to figure out what I want to do with my Paladin, and there's no time left! Oh well, at least I have all my talents figured out, that's good enough for now.
One other thing to look at is Glyphs. Being Druids, we really don't have as many glyphs that directly affect us as other classes do. This makes glyph selection considerably easier for us. Our glyphs:
Glyph of Frenzied Regeneration
Glyph of Maul
Glyph of Rake
Glyph of Rip
Glyph of Shred
I intend to take the Maul and Rip glyphs, with intentions to take the Mangle one later on at 80. This is because I believe the other effects are not meant for PvE (Shred) or useless (Rake) or redundant (Growl, assuming it's still affected by hit rating and expertise.) In any case, I think the effects of these glyphs are just more useful in general, since I plan on being flexible enough to be a good DPS. As for the minor glyphs, I plan on going with Challenging Roar, though if something better comes along, it's the first to go, Thorns so that I may actually start using the spell, and Unburdened Rebirth, because it's the best thing to happen to Rebirth since the cooldown was lowered.
Those are my plans for tomorrow (though I guess it's now today, I started writing this at work, but now I'm at home with finally a peaceful moment to myself.) Maybe tomorrow I'll make up some statistics and use them to prove that Eclipse is the central defining talent for Moonkin. You have been warned.