Once upon a time the successor to OpenSolaris 2009.06 was supposed to be OpenSolaris 2010.02
and then it became OpenSolaris 2010.03
with a release date in March and then who knows what happened. There hasn't been an update to the OpenSolaris operating system now in a year nor has there been any communication at all to developers or end-users by Oracle about their plans after taking over Sun Microsystems. All indications were that Oracle would at least deliver an OpenSolaris update in 2010'1H, but it looks like that won't happen.
Within the BugZilla
the release was known as "OpenSolaris 2010.1H", but all of its blocking bugs are cleared and today is the end of the first half of the year. At OpenSolaris.com
is still the 2009.06 release. 12+ months between releases is a far cry from the Project Indiana
days where the intent was for a six-month release cycle -- something that Sun had pretty much achieved up through the 2009.06 release. The latest OpenSolaris Developer Preview release is Build 134 and it was released at the beginning of March, which used to be updated on a bi-weekly basis.