Though Google I/O starts on May 8, the search giant will release the first Android P Developer Preview before then. The Android O Developer Preview 1 was released in March last year so same pattern is expected to be followed this year too.
According to a popular leakstar, Evan Blass, Android P Developer Preview 1 is expected to arrive in mid-March. It is yet uncertain how many previews will be launched in 2018 though before the final version hits the market, but during the previous two years Google unleashed up to five preview developer versions.
Until Google released the first Android P Developer Preview, many reports highlighted some of the new features that upcoming may introduce such as notch support and the option to alert users if a phone call is being recorded.
The latest Google smartphones may be the only devices that will support Android P Developer Preview 1 such as Pixel and Pixel 2, but more may be added in the next versions of the preview.