PG would have to go the JUCE way to get a Linux version otherwise they would need another 6 months in a year to make the Linux version, so you would need a 18 month year, 24 months for iPad, 30 months for Android also......
Going JUCE will give iPad/Android as well all at the same time.
If these run, Biab should run:
The Top 4 DAWs for iPad
Best DAW for Android

It all just seems like a no brainer, I really can't see Biab lasting into the future how it is now without development of something new in parallel behind the scenes. After seeing Logic for iPad with a chord track and AI session musicians that play along to it, the writing is most definitely on the wall.