As mentioned on Glyn's blog JSR 291 is now final. The most important point here is that OSGi Service Platform Release 4 Core Specification Version 4.1 (quite a mouthful) is done and published. JSR 291 adds some icing to that cake by having a final JSR specification for the OSGi core spec. So, for those who like their Java specifications with a JCP flavor, OSGi technology is now also available in that flavor. :-)
You can access the JSR 291 materials online now.