It's ALIVE! Awaiting some new questions so I can hopefully help someone! FYI, I worked for Cox for 16 years, MOST of that in advanced Data support Tier 2. I enjoyed what I did. Prior to Cox, I worked...
Other things that don't work, could be improved, or just FYI:
Can't delete or edit an original post. Edit: Original post can be edited. See below.
Can't always edit your own reply. (Might only apply to some replies from previous UI).
Forum notifications for threads in which you participated are not on by default. Do forum notifications even work? (bell icon in upper right) I haven't received any on this UI. Does a user have to be signed in with this website loaded for a forum notification to happen? That would be impractical, but it would explain the push for email notifications.
Community and forum home pages don't include the name of the user who last replied.
Time-of-last-reply is only a link to the last reply on the Community home page, not from the individual forum home pages.
Home page "unread" number for each thread just duplicates the number of replies.
Threads with replies you haven't read aren't identified. (How did you find this reply?)
Can't link to a specific reply, only to the thread.
A new reply sometimes requires a page refresh for it to be displayed.
Changes to profile settings cause an unformatted "unsaved" error message requiring the forum browser tab to be closed and re-loaded. Where's the save button? Not Fixed
Account Menu > Profile displays your recent replies with hyperlinks that may lead to the actual reply or may go nowhere. It's more likely to work when you first sign in.
A function to change the parent post/reply of your own reply without changing the time of the reply would be a helpful feature. (correct replies to the wrong post/reply)
There doesn't appear to be a way to locate old threads quickly without knowing what to look for and doing a "Search". There's no page scroll or go to the oldest thread. There has to be a better way of doing business than clicking "Show More" a bazillion times.
If changes to a lengthy post you're editing disappear when you press "Reply", Sign Out and Sign In again. Go back to the reply you were editing and hit "Reply" again. Your changes will be published. There's no error message for that one, you just have to know.
Thanks for the heads up about how to edit an original post, I don't start new threads often, but it's nice to know how to edit. I started a new thread to test the new UI. I tried edit too. Correcting a typo counts as a last post.