He's interested in all things tech, science, and photography related.
The multitasking button can not be spotted in the screenshot and the pill-shaped home button is more of an outline rather than a prominent button that it used to be. Because of this, the fact that Google shared an Android wallpaper depicting a series of popsicles (see above) - which neatly meets both criteria - has led to the believe that Android Popsicle is due to be launched later this year.
According to Stephan Hall from 9to5Google (h/t ArsTechnica), it's '100%' gesture navigation.
It was the disappearance of the back button. The home button particularly looks similar to the gesture navigation system available on the iPhone X. But even so, Android has other stop-gap measures to keep users safe, including application sandboxing (this limits an application from running within a larger code environment) and the relatively new Google Play Protect feature that debuted in 2017.
Google has since removed the evidence, cropping the image to only show off the feature it actually meant to show off.
It's not too long until we should know the name for sure.
Based on what we saw on the first screenshot, Google has completely revamped the navigation bar in Android P which is speculated to be called the "Popsicle" and it is a major change when compared to the 8.1 Oreo. In theory, gesture-based navigation could allow you to shrink the navigation bar and save some screen real estate, although that doesn't appear to be the case in this particular image. Android P features a new horizontal sliding animation when you navigate from screen-to-screen in an app, which would line up well with a swipe-to-go-back navigation gesture. Nor am I convinced it should replace the traditional navigation bar.
I/O is now less than a month away, so the answer to this sweet mystery may not be far off being solved.