Just read that the PSP version has been removed from sale. Does that mean the GOG version will follow suit ?

edit: tried to post a source link, that didn't work.

Found this: http://www.dualshockers.com/2016/09/26/trails-in-the-sky-removed-from-european-psn-after-license-expired/

PSN (EU) version was removed after the license expired, according to Ghostlight.
PSN (US) version is still there and published by Xseed.
PC version is published by Xseed.

So the answer is basically "no". The PSP-thing was due to a "local" publisher's distribution rights expiring. The PC version is distributed by XSeed directly, so it's here to stay.

Right, that's good then. ( I grabbed part 1 in the sale so seems like part 2 should still be available from here when I get to it ! )