I did nothing of the sort (on purpose at least!) but apart from minor cosmetic changes, we are still stuck with the limitations I mentioned and to the best of m

I did nothing of the sort (on purpose at least!) but apart from minor cosmetic changes, we are still stuck with the limitations I mentioned and to the best of my knowledge I did not see real improvements over the past year (but I might have forgotten some). However, I've just tried again to be sure and I'm still unable to create a group chat with someone outside my org (that I've added to a channel), unable to reply to a specific message in a conversation, unable to edit some messages. As an admin I am also unable to perform any kind of moderation in a channel (arguably, that's not a showstopper, but it is weird not to have admin rights over my organization chat). Also, switching back and forth between two conversations still shows a very noticeable delay with a spinner which really hampers the experience. Hopefully the changes you see in the pre-release will be deployed soon and fix some of those issues.