Nope. Cataclysm will by most accounts be out before Blizzcon, so September or October. Cataclysm beta isn't to start until SC2 is out of beta, or very close to out of beta (sometime next month). Also, Blizzard has announced that the Ruby Sanctum will be in before Cataclysm launches.

Not to mention Blizzard has said the Cataclysm event is to be a month before it even launches.

Eh it was more of a joke :-P

But following the buff to 30% and the release of Cataclysm it would go something like this...

Since Cataclysm should be right around the corner when the buff reaches 30% we can estimate how much time we have left to wait for it's release. This isn't really accurate at all because we don't know if Blizzard will increase the buff at the same intervals. (i.e They increase the buff by 5% every 3 weeks. It could be 3 weeks one time and then 5 weeks the next.) So this renders all of this moot but it's still a cool little judgment of how close we are.

Buff=10% Wait for Cataclysm is 33.33% done
Buff=15% Wait for Cataclysm is 50% done (Half way!)
Buff=20% Wait for Cataclysm is 66.66% done (Little bit more!)
Buff=25% Wait for Cataclysm is 83.33% done (Soon!)
Buff=30% Cataclysm should ether be here or is right around the corner (OMG When is it!?)

I gave this a thumbs up just for the Leroy reference. :)

D'oh! Leeroy*
(WTB an "Edit Comment" Option)

Cataclysm WILL NOT be out before Blizzcon. It will be Blizz's big talking point & 1st time peeks/trying at the expansion. Just like The Lich King! Blizz wouldn't kill the excitement of Blizzcon by releasing it sooner than the con. Besides, judging by history, it's Blizz's pattern to release new stuff in late november, to possibly the 1st couple months of the new year. Hate to be a buzzkill!

@rhino327 They've already made jokes about people being "sick of goblin rogues by the next Blizzcon." Cataclysm was already their huge talking point at Blizzcon--the last one they had.

If Blizzcon is in October (it is) and Cataclysm ships in November (since you're basing that just on what they did last year), the pre-expansion event/patch would be in full swing by that point and the beta would be over and everyone would already know what's coming. Would devoting an event to teasing something that's going to be coming out in a month make sense?

What we're likely to see at the upcoming Blizzcon is info on the Warcraft movie, or their next-gen MMO. Or something completely different out of left field.

Nah! It'll be a Cataclsym Blizzcon this year as well, with a playable Cataclysm for everybody to play & drool over, then hit the stores in late November. (think Lich King)

I've got no doubt that they'll touch on the movie as well, since it's in the 1st stages of becoming a reality. The mmo, not so much. That's their new, top secret baby & they won't let the cat outta the bag on that one until at least the next Blizzcon, which will then be used for the launching point of the mmo.