I believe only Tinder API can be called as a fairly active project right now (two active developers, constant code updates and new tickets in the bug tracker).
As i said Spark has only one volunteer developer now. Well, sometimes he is active and do lots of code updates. But i really cant say when or whether there will be some official releases. The main problem is that we (community) have no powers to do releases. So we rely on Jive officials on that. And they… are not very active with open sourced projects on this site. They are now more focused on their commercial products. And we are still waiting for some tools to make our own releases and maintain projects.
It is a bit better situation with Openfire. Jive official developers sometimes do patches and releases, but it is still very unclear when they will have time to do this. Usually it has to be some critical security bugs when they respond faster. But this project has more users, more community users providing patches and Jive’s commercial projects can be used in conjunction with Openfire, so they will not abandon this project completely (as with Spark or SparkWeb). So, if Openfire is doing ok for you and you dont have any problems with it and you dont have any pressing feature requests, you can use it and there will sure be future releases. I just cant tell you when new release can be. It could be a matter of days, weeks or months. Sadly, this is how the things are now. If you need fast response, fast bug fixing, when you should probably look for another server.
Speaking about other projects, i cant tell about Smack, XIFF or Whack. SparkWeb can be called dead right now (no developers, no code updates for a year i think, no volunteers).