Release Candidate 2 (RC2) (built on October 3, 2006, with a build number of 5744.16384), was released to CPP members, TAP testers, MSDN/Technet subscribers, and other technical beta testers on Friday, October 6, 2006, and was available for download until October 9 in preparation for the final release of Windows Vista. Because of an aggressive development schedule, this was the final build that would be officially released to the general public for testing. Nevertheless, all pre-release product keys will work until the final RTM build. Several testers reported that RC2 was faster and more stable than build 5728.[60] However, because RC2, which was a regular interim build, and not a major milestone as the name suggests, was not as rigorously tested as RC1, RC1 may have been more stable in certain situations. This build fixed many compatibility issues that plagued previous builds. Vista's GUI, which continued to be improved, contained some minor tweaks, one of the more prominent of which was the new ability to customize the color, but not the transparency, of maximized windows. In previous builds, windows became predominantly black when maximized, an effect that could not be altered by users.[61] A Control Panel icon for Windows Sideshow was also added.
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 a 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 prominently.
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