Can B+ minimise to system tray yet?

Not yet. You can use a dll to do this though

http://www.blitzcoder.com/cgi-bin/showcase/showcase_showentry.pl?id=kizz3206032003173632&comments=no

http://www.blitzcoder.com/cgi-bin/showcase/showcase_showentry.pl?id=kev06022003210151&comments=no