Last weekend, the project created the 1.9 release branch as part of the preparations for the upcoming 1.9 release now planned for late July/early August.
Please note that some translations don't have any active translators assigned at the moment, yet are in need of updating. So for those of you who are wondering what to give back to the community, please sign up and spend some time translating terms for your favorite language. There's no need to be all-or-nothing about this: all contributions are appreciated - there's no need to wait for a moment where you have time to do a full translation.
While working on the 1.9 translation, all translations that match those in 1.7 and 1.8 are being copied to those versions by Transifex automatically, so by contributing to 1.9, you also contribute to 1.7 and 1.8.
If you don't want to sign up with Transifex: no problem, contact me off-list and we can figure out a way to shepherd your contributions into a release.
Robust and Flexible. No vendor lock-in.