In addition to the Virgin Hotel - Las Vegas (x-Hard Rock location), Virgin is launching 2 ships to cruise the Caribbean. Named Virgin Voyages -- just saw a commercial about it. Looks like it begins cruising in a couple of months.

As to a casino aboard, their FAQ says this:
"...our casinos will have a mix of traditional, vintage, and modern games available."

Billed as 1-week cruises for adults only. May be of interest to "wet chip" collectors out there!