With the upcoming Beta9 release we also drop support for AS6

AS7 M1 should come out in Nov-2010. This will be the release you would want to look at for AS/OSGi integration. Both AS and the OSGi use the common Modular Service Container (MSC) infrastructure, wich is about 2000% faster than the MC based implementation. The current core framework TCK coverage is at about 75% (without the optional security bits). We plan to release a certified OSGi core framework in Q1/2011

We'll continue with our regular 8 week release cycle and if you are interested in pure OSGi functioanlty, you can always use our standalone runtime. Only for cross-service (xservice) integration i.e. accessing OSGi service from non-OSGi deployments and vice versa you would need the AS integration.