Inspired by this post, I installed it today. I find the interface & workflow a bit like RAW Therapee, but more powerful & a bit more user-friendly. Ultimately, it's the output quality of this program that impresses me (just like PPL does, but more so) and when the official version is released I think I'll be seriously considering purchasing it.
I've read the v3 manual through before so I had some idea of the program.
SILKYPIX® Developer Studio SOFTWARE MANUAL
That's just as well, because an English verion of the v4 manual is not yet available.
If you do look at this program, take a full 30-day look, not a 30-min glance, as there's a hell of a lot in this program.
Dan.