Nothing specifically but Thursday is rumored from numerous sources to be the release date probably for unbranded/unlocked devices. Hopefully ATT has been testing on th quantum and focus 1.3 and 1.4 in preparation for release I hope they have and that MS has been holding ATT's corporate feet to the fire for a speedy and hassle free update
Hopefully Microsoft learned from Mango and we'll see all devices get the update at the same time. I can see it being difficult in Europe since there's 20 carriers, but in the states we've got 4 carriers and like 9 phones.
New of a sort today saying ATT will be among the first to release the mango update coming in the fall so slight chance later this month or as late as 12/20/2011 the last day of Fall.
supposed to be on 9/27 tuesday for all WP fones except HD7s and rev 1.4 foci they will get it in Mid October the DVPO is getting 2.12 firmware upgrade and will get mango in October as well I am assuming!