It's mostly a rebranding of the existing meeting. They are still going to have 3 presentations that will be between 3 - 5 minutes each. I'm sure they won't be entirely scripted and the presenters will have to do some research and adaptation. I think they will still be counseled on various points just like they were on the TMS.
Someone over on Reddit said that it was just announced that the BE book has been translated to ASL and will be released soon. I doubt they would translate it, announce it's release, and then shelve it in just a few months.
The most interesting part of the letter to me is the reduction, yet again, of the WT and Awake. I can't see how most JWs can accept that this is how Jehovah would "speed up the work".