Yesterday evening I had a quick chat with @Langbart via IRC concerning the fact, that after installing RC 1 (Win), which is 25799, the build info on the startup screen says, it is 25794. The quoted post contains the problematised Info.
May someone please confirm, that this is not a bug? Yesterday, one of the theories was, that it might be connected with different OS-builds, but we distanced ourselves from the theorie quickly.