I have found the various discussions about the deprecation notice, but I believe there may be a misunderstanding in the advisory that Cisco published regarding EoS/EoL dates given.
The advisory at Cisco EoL Advisory for 9.8(x) is notifying customers that Cisco plans to remove support and software maintenance on Cisco ASA code version 9.8, not the Cisco ASA itself.
Cisco ASA is now called Cisco Secure Firewall ASA and is still supported from my understanding. ASA version 9.20 and 9.22 are released with the recommended release sitting at 9.20 at this time.
If this decision is made to move this to community support so that engineering time can be spent on other platforms then I understand. I wanted to be sure to note that the advisory the decision was based upon is for the software deprecation, not the platform as a whole. I operate a sizeable amount of ASA devices and will need to plan accordingly going forward regarding forward compatibility.