http://arstechnica.com/gadgets/2015/...us-with-edram/

TL;DR: for the high-power models, the big surprises are:
1) i5 H series are now quad core, w/o hyperthreading. If this makes for cheaper quad-core systems, this will be a big win for some folks.
2) No reduced-wattage quad-core system (same as Broadwell) -- vs. the 35W i7-4710HQ/i7-4712HQ in Haswell. Coming later? If not, what does this mean for the high-powered thin-and-light machines like the Macbook Pro 15" and Dell XPS 15?

For the mid-power models (what I'd expect most people will want), there are no big surprises. I'd expect most people will do best with the i5-6300U or i5-6360U; (edit to add) and there doesn't seem to be a huge advantage over Broadwell, except in the integrated GPU. So deals on outgoing models may be very attractive.

For the very-low-power models (e.g. convertible tablets), the new Core m series looks really interesting, but I'd wait for benchmarks before rushing to order one of these.

Expect a SLEW of new model announcements over the next few days (plenty already on Tuesday) and availability actually coming around the end of the month sometime later.

edit to add: the first thing I've seen with actual "available" dates is the announcement for the Lenovo Thinkpad E-series (small business models) which are listing available in November. So,umm, who knows whether this is doing to be typical.

edit to add again: as I said above, I'm not sure how big an advantage Skylake will be for most people on midrange models, in terms of the CPU itself -- although for people who do a bit of gaming but don't want to step up to a machine with a higher-end discrete GPU, the GPU advantage may do it. OTOH, on the PC side, this looks to be the generation where Thunderbolt takes off (Mac has had it for ages) and USB 3.1 will be important in the future, so for those who would rather spend more and keep a machine longer, I'd definitely get one of the new ones. For people who turn over machines every couple of years, there are likely to be some very good deals on Broadwell machines as the models turn over.