You can watch this video in which he talks about the project:
However, his project needs funding, so he joined Kickstarter and is asking for contributors (backers).
You can see the Jetpack 2 Kickstarter project here. Hopefully, you'll join it, to.
The developer says Jetpack 2 will have Linux, Mac, and Windows support. That's good news!
Apparently, I'm not the only one who has been waiting for Jetpack 2 for about 10 years! :P