A friend of mine went today, I got a report from him around 21:30 hrs.
He said he talked to the folks at the Remington both and the Marlin booth about the Handi Rifles. both had about the same to say. They say there will be no changes to improve the frames to make them customer compatible concerning barrel swaps. If you want to swap barrels you'll still have to send 'em in. Other than that no one knows what will change.