To my knowledge, ESRI still hasn't released the official date that WAB and WAB dev edition will be retired.
Also what does that even me? I have WAB dev edition and unsure if it will affect my existing apps from running, editing existing apps, or creating new apps.
I also don't agree with the retirement as it's replacement Experience Builder still has issues and is not production ready.
At least push back the retirement of WAB until Experience Builder is ready and performance issues are resolved.
