I just pushed update of upcoming Ruby 2.2 package into dist git. This time it is updated to r48879. Here [1] is the associated build (yes, ARM failed, but I'd expect that second round would pass, feel free to make your own build in case you want to experiment on ARM).
I dropped the release back to 1, since it seems that all bundled gems have bumped their version since Ruby 2.1, so it should be safe (but if you have installed previous builds, this version will not update them due to this change, sorry)
Any feedback is welcome.
BTW Ruby 2.2 should be released in one week, i.e. next Thursday, so this is good opportunity to provide last feedback to upstream.
Vít
[1] http://koji.fedoraproject.org/koji/taskinfo?taskID=8410804