Fudzilla posted Intel lists Haswell refresh parts
A quote from the article:
Intel has added a load of Haswell refresh parts to its official price list and there really aren't any surprises to report.Intel lists Haswell refresh parts @ Fudzilla
Most parts ended up with a 100MHz clock boost and as far as we can tell there were no noteworthy tweaks other than the clock bump. Devil's Canyon parts are supposed to bring a few nifty features including better packaging, but they are coming a bit later.