Since the last update, openSUSE Tumbleweed had two snapshots.
The most recent snapshot updated the Linux Kernel to 4.5.3 and Plasma updated to version 5.6.3. Bluedevil 5, breeze and hexchat were also updated in the 20160508 snapshot. Samba had an enormous list about bugs and fixes in the email that lists the details of the 20160508 snapshot.
Plans for the new GNU Compiler Collection in a Tumbleweed snapshot is at least three to four weeks away because of a huge update stack that will be made when GCC 6 makes it into Tumbleweed. Pre-testing in private staging has shown that GCC 6 should build smoothly in the various stages that lead to a Tumbleweed snapshot, but that remains to be seen until a snapshot with GCC 6 is at the users’ fingertips.
As for Qt 5.6, the bug that broke YaST appears to be swarming between two chopsticks - it took forever to catch and fix. However, as Dominique shared on Saturday, a fix is found and merged so the 5.6.x release is coming soon! Perhaps we’ll wait for 5.6.1 as that should be out soon.