The CW is thinking about bringing back an updated version of 'Beverly Hills 90210', perhaps as a companion show to its hit 'Gossip Girl'. It's being produced by CBS Paramount Network TV, which took over the TV arm of the late Aaron Spelling production empire. They're now talking with Rob Thomas, creator of 'Veronica Mars', about creating the overall concept for the series as well as writing the pilot episode, if not the entire series.
As to who might be brought into the new series from the original (if any!), that's still up in the air at this early stage. But if any of them do show up, and they also happened to cross over to the other spin-off, 'Melrose Place', then they'd be eligible for the TV Crossover Hall of Fame.