Development of Windows Vista - Post-Service Pack 1

Post-Service Pack 1

Build 6001.18063 (release date of June 24, 2008). Microsoft Released KB952709 as a Reliability and Performance update for Windows Vista this build is notable for two reasons. First, This is the first publicly released update that increases Vista build number beyond the 6001.18000 (final) build of Service Pack 1. Second, this build replaces the 6001.longhorn_rtm.080118-1840 build string of SP1 with 6001.vistasp1_gdr.080425-1930. The longhorn build string was present during the early development of Vista but was not seen in the official release build or any update after until it was reintroduced during the SP1 beta and was left in when SP1 was released, this build marks its removal from the only release version of Vista to contain the longhorn codename in a prominent manner.