X-Plane 11.20r2 has only one bug that we are trying to fix: a bug in the plugin SDK that can cause some plugins to crash when creating and destroying windows.
Tyler and I dug into this and found that the fix was a bit more intrusive than we wanted for this late in an RC.
So: if you are a plugin developer and you are working with the new SDK, either for VR compatibility, to use the new 3.x APIs, or just because you are updating the plugins, and you have time this weekend, please email me and I can send you our new fixed XPLM DLLs.
My hope is to get half a dozen plugin developers to bang on them over the weekend, so that when we cut 11.20r3, it really will be the release.
Edit: RC3 is live – thanks to everyone who helped!