ArduCopter.elf current release

Is the current binary of the Emlid ArduCopter.elf release based on the Ardupilot 3.1 or 3.2.1 code release?

If the former, then is there any plan to rebuild it based on the 3.2.1 release? Or, will the next target be based on the 3.3 release instead? Unfortunately the 3.3 release seems to be unknown at this point.

We will release the next deb packet with release of 3.3, at the moment we are working hard to push all changes to the master so that we can be fully in sync with APM in the future.