Yes, expect the Pro1 (including minor revisions) to remain for sale ... Unless Fxtec folds, or gets some new 'angle fund' for a Pro2 investment.
Manufacturing the Pro1 was/is no less a big investment. Spreading this investment over as many units as possible is what makes that investment all the more worthwhile.
Don't forget that the Pro1 seems - to me - to be Fxtec's present (and in near future) sole source of income.

Minimum batch sizes are small compared to what they used to be. Keeping the Pro1 for sale thus only demands for a (relatively) small additional investment.

From the buyer's investment point of view.
The Pro1 allows for running (quasi) open-source OSes and is - from what I've read - quality built. The only remaining 'daily' hurdles for a nice long-term investment spread are taking care of our precious one and battery replacement (in service centres?).
Any confirmation of the latter remains appreciated.