We have released a new firmware for the SV. No big changes, at least not visible. You can get it at nature.atari.org and then click Downloads. Remember to refresh the particular frame or you may see the old svup005 link.
We have a short version of the changes at nature.atari.org under News. The details are in our subversion log. RGB has not been our top priority, but we see that some people want it. Discussing it though should not happen in this thread.