Apple on Monday seeded a fourth iOS 10.1 beta to registered developers, as well as the general public -- potentially the final beta before the update is officially released.
Developers already on the 10.1 track can download the new beta as an over-the-air update. Otherwise, they'll have to go to Apple's to download it. Everyone else must be registered with Apple's .
It's not clear what changes are in the new code, but Apple is likely extremely close to finishing the update, since it rarely issues more than four betas for a point release, if that many.
iOS 10.1 is mostly expected to clean up bugs missed in 10.0.2 and 10.0.3. Among these are , preventing call-directory extensions from working reliably.
The main feature, though, will be a promised Portrait mode for the iPhone 7 Plus. The technology takes advantage of the Plus' twin cameras, identifying a subject then artificially blurring the background to simulate bokeh.