To summarize two threads - Allegorithmic is Adobe's bitch now 
See you in 5 years as a slow-crawling semi-dead piece of software with developers who moved to other companies.
LOL they won't reply to that.... Anyhow it is all too late now - they have already sold us out - so nothing can be done about it now.
Surprising what humans will do for money - I know it has been said that it is not about money - but it always is.
This is easily the saddest thing that has happened in the game art industry for quite some time now. But I bet all the other 3D painter tool companies are dancing right now, not every day competing software just throws the towel in and hands the lead back to you.
I wonder if Allegorithmic understand just how much of a dirty word they are in the 3D Art industry right now.
I use Photoshop every day, and while I like it a great deal, it is easily the clunkiest UI to work with out of all my game art dev tools, I can't imagine how they can contribute to such a fantastic tool as Substance Painter.
What may help to lessen the feeling of complete abandonment and lack of loyalty to customers who supported Allegorithmic since its inception, would be some kind of explanation as to:
1) what a company like Adobe who has pratically no presence in the 3D market could possibly bring to the table to improve an already industry standard tool.
2) And likewise what Allegorithmic feels that a company with inferior tools to its own feel they can learn from them.