http://www.theregister.co.uk/2012/10/24/no_windows_7_sp2/
"Exclusive Waiting for a second Windows 7 Service Pack? Keep waiting – it doesn't sound like Microsoft will be releasing one.Sources close to Microsoft's sustained engineering team, which builds and releases service packs, have told The Register there are no plans for a second Windows 7 SP – breaking precedent on the normal cycle of updating Windows."