For a while, it was merely speculation (and several good hints) towards
Release Candidate Refresh 2 (RCR2) being the Release to Manufacturer (RTM)
build. There has been a
'registry hack' (unzip and run the cmd file) going around for a few days now
to enable the option to
download SP1 via Windows Update. This 'hack' is actually straight from
Microsoft, which was given to beta testers on Connect January 23rd. According to
Geeks Anatomy, Jeff DaVos (a Windows Vista SP1 beta program leader) has said
on the Connect news group that this is indeed the same release being used for
RTM, and that "What you got is what we're all running our Vista machines here
internally - we definitely RTM'd".
The RTM, or release to manufacturing, versions of both operating systems
can easily be found on BitTorrent tracker sites such as the Pirate Bay,
which has made them available since yesterday. I am sure Microsoft will
say, using anything
except for files downloaded from Microsoft directly
is a risk. So, if you plan to install SP1 via the registry changes/torrent, you
are accepting this risk.