This German publication, DWJ, (which I can't read and haven't had the chance to look at with Google Translate) contains photos of what appears to be a new 9mm Glock model, the G46, which features a rotating, locking barrel. This file is posted to an AR15.com user's Google drive, so I'm not sure how long it will be available. The G46 is on page 7 of this PDF file:
Overall, the pistol appears to be Gen 5-ish, but with a longer beaver tail, and obviously the new locking barrel design. Seems like potentially the biggest Glock design change since the company got started.
I have no personal insight into this type of barrel, so I'm interested to hear what you all think of this new design.