I had a couple of those. (Well, still do – but not using them for anything now. Mine are the ones with 16 cores, that I got for backing them on Kickstarter when they did their original crowd funding) And I was wondering the same a while ago. This guy that was part of Adapteva, makers of Parallella, is working on some ASIC stuff now it looks like.

https://github.com/aolofsson

https://scholar.google.com/citations?user=qdDUg48AAAAJ&hl=en

And since Adapteva website also says: “Adapteva is now Zero ASIC”, I guess maybe some other people that were originally doing the Parallella thing are now doing ASIC things with that guy too.

https://www.adapteva.com/

The Parallella website is still up.

https://parallella.org/

And you can download the old Ubuntu images for the Parallela SBC from the GitHub releases. But they stopped adding anything new to it years ago.

https://github.com/parallella/parabuntu/releases