I am sorry to read this but hardly surprised. It has been obvious that whatever is being said the devs have moved on to other probably more lucrative areas of income. I have (had) used Perch for many years but made a decision a while ago that it was just not going to be a viable option going forward and was falling way behind other options available and support was almost totally reliant on a few community members who could just disappear at any time.
Honestly I would prefer Perch was either completely open sourced or just given up on, falling between the two stools inevitably leads to decay, and more importantly increasing issues for clients and developers alike who struggle to live with old code and feature sets.
It gives me no pleasure to finally kiss Perch goodbye but client interests must come first, despite historic attachments and good memories.