Quoting Christian Perrier (bubulle@debian.org):
Please hold your translation updates for a few hours. An absolutely necessary string change to aboot-installer is needed. Steve Langasek is working on the wording. I'll drop a very short mail when updates will be OK again.
In sincerely hope that no other change will happen but this is somewhat the very last freeze we have before the release, so wa cannot leave wrong English strings in packages.
After more check, Steve mentions that no change is indeed needed.
So, and I believe this will be the last mail about this topic, you can now go ahead and update your files