Not much going on now but ...
As you might have seen recently there has not been that much updates to the Showtime source repository. The reason for this is that i'm working on setting up automated builds. In the end this will (hopefully) generate new Showtime builds for all supported platforms and even make it possible for Showtime to autoupdate itself (if enabled by the user). This should reduce the need for unofficial builds of Showtime for the PS3 which most people use today because I'm too lazy to publish new versions on a daily basis.
The complete autobuild system is probably ~1 week away and then comes the additional work of adding support for autoupdating Showtime from itself.