Tomorrow's ES magazine free with the Evening Standard has a front page about the reopening - not sure how much there will be inside, though.
As has already been mentioned on this page, the BBC has produced a special souvenir magazine about the opening. Available in the ROH box office and, presumably, elsewhere.
In and Around Covent Garden magazine's December edition is largely devoted to the ROH reopening. It can be picked up free of charge at a number of locations in CG. Now all we need is for the ROH to reinstate standby privileges for holders of the IAACG Privilege Card!