Dear Tumbleweed users, For the last few months, several people have worked on porting packages dependent on gstreamer v0.10 to updated gstreamer 1.x, and we are left with only a few (unmaintained by upstream?) packages in Factory which are still dependent on the old version and are not portable in a straightforward way. These are (apart from gstreamer-0_10 plugins):
* freqtweak * ignuit * kde3-kaffeine * kdemultimedia3 * libucil * moodbar * morituri * pgadmin3 * psi+-plugins-psimediaplugin * python-gstreamer-0_10 * sffview * wxWidgets * wxWidgets-ansi * wxWidgets-wxcontainer * xfce4-mixer * xfce4-volumed
I would like to now (in a couple of days) file drop requests for the entire gstreamer-0_10 stack for openSUSE:Factory. This is a consequence of the lack of upstream support for gstreamer < 1.0 (GStreamer 1.0 was released on September 24, 2012), which makes, for instance, security issues such as  difficult to track and fix. Having this in the Tumbleweed distro is therefore ill-advised.
For Leap starting with 42.3 and beyond, we are, of course, dependent on SUSE for decisions relating to the dropping of gst 0.10, and I understand that it is expected to be maintained at least for the life- times of 42.x releases (please correct me if I am wrong).
To summarise, the gstreamer version 0.10.x stack (zypper se gstreamer- 0_10*) will soon be dropped from Factory, which will thereafter only carry upstream maintained stable releases of gstreamer 1.x. If you are a maintainer of any of the above pkgs, please consider patching your app to work with gstreamer 1.x to prevent them from becoming "unresolvable" soon.
Thanks for bearing with my long email, and wish everyone a very happy holiday season. Have a lot of fun!