Yep. By far one of my favourite tools for user research, Silverback, is now retired. Big thanks to everyone who worked on it.
As of 1 May 2019, Silverback is no longer available to download and purchase. We will continue providing support to Silverback customers for 6 months after that date, and release critical critical updates if necessary.
I'll keep running Silverback for as long as I can, but now I'm on the look out for an alternative.