I've coded most of the jetpack physics and controls, and it's turning out better than I expected. Closed beta testing is showing the jetpack to be nearly bug free and with control and responsiveness akin to that of Tribes 2.
The jetpack is used for short burst thrusting, with a regenerating fuel gauge limiting how often you can use it. My testers are giving me very positive feedback on it.
What I've got left:
1. Add the jetpack model to each player who is equipped with a backpack.
2. Add the new Force Power.
3. Minor tweaks to some of the guns for balancing purposes.
4. Some bug fixing.
How long until its ready for release? Hard to say. Just depends on how much spare time I have to work on it. Could be as soon as a week; could be later.
I'll keep updating here as things change.