This is supposed to be feature complete for the upcoming release, and we are now in the pre-release feature freeze from now on (see tinyurl.com/gitcal for the release schedule calendar).
Minor and obvious bug fixes and documentation updates are appreciated, but the primary focus for the coming few weeks will be on regression hunting and fixes.
I also suspect that the documentation to the new features may still be sketchy, and we may want to fix that by the final release. The "pulling signed tag" topic, for example, may want a new article in Documentation/howto/ area, perhaps lifting some text from here. I may try to do an initial draft over the long weekend.