Strobists will be happy if the spec list at B&H is correct.
Max sync = 250th of a second.
And another first....
It has a focus assist (AF) beam.
2, until now, Nikon only perks.
Sorry, but while the B&H spec list is correct, your interpretation of it leaves something to be desired. As was pointed out, the 1/250 X-sync has been available on a number of Canon APS-C bodies. Also, the AF assist beam is a rapid strobe of the popup flash, not the separate, dedicated AF assist lamp you seem to think it is. That's one good reason to buy a 430EX II or better flash...
DP Review has a hands-on preview as well. One thing they mention is AF to F/11 in live view. Does this mean there isn't the <F/8 issue with, for example, long telephoto + TC's?
Yes, on the 70D you can AF in Live View with an f/8 or f/11 combo (an example of the latter is the 100-400L + 2x TC or 800/5.6 + 2x TC). Of course, you've always
been able to AF in Live View with an f/11 combo. My 7D could do it. The difference is that this is phase detect AF at f/11, meaning it's faster than the contrast detect which doesn't care about aperture.
360 degree mode dial. That'll please some people Not me though. I like the stop in the dial in the 7D, as it makes it easier to use it blind (with eye in the viewfinder), mainly switching between the three custom modes. In particular moving to C3 is very easy, just move it as far as it goes.
+1 - on the 7D, I liked being able to just spin the mode dial to until it stopped and be at my C3, my birds in flight aka "OMG quick get a picture of that flying pig" setting. For the same reason, I am not a fan of the idea of a locking mode dial. But then again, I no longer have a mode dial, at all...
No mention of a dedicated AF processor, just like 7D/5DIII have. It's what it makes their AF exceptional. 70D "only" has a Digic5+.
I have this feeling the AF will not on pair with the 7D's.
I suspect it will perform equivalent to the 7D, even if it doesn't have a dedicated AF processor (and it still might have one - a detail like that might not be worth highlighting, and may actually detract from/confuse the dual pixel CMOS promotion, but more information will come along soon).