According to a post from the Windows Update Beta Team a new build of Windows XP SP2 will be released soon via the Windows Update V5 site. This build includes many fixes for reported issues. The build may be installed on Windows XP RTM, SP1, SP2 RC1 build 2096, or SP2 RC2 build 2149. Installing the new SP2 build onto any other SP2 build is not supported.
The build is expected to be posted today and Microsoft will send out emails to Windows Update V5 testers as soon as it's released. A good guess would indicate the build released will be 2161 unless further builds have met the requirements for public release. Stay tuned for more information