If ever a cartridge deserved the longslide it's the 10mm. Really nice looking gun. Bob Serva did a good job saving Dan Wesson before founding Fusion, and pretty much saved the 10mm cartridge as well.
The latest Shot Show report showed a Colt Delta resurrection but I have trouble taking them seriously. Their "News" section on the web site has two items on it: one from 2002 and one from 2004. This is not a company which appears to serious about doing business. I think all the money is on the military side.
CZ owns Dan Wesson now and make the nice Razorback 10mm and I think Kimber makes them, too. CZ sadly hasn't really revived the Dan Wesson revolvers in any serious way either. Maybe the market's just not there?