Steve Dent for Engadget DJI has unveiled its latest smartphone gimbal, the Osmo Mobile 8P , with a new feature that should greatly benefit solo creators. It now includes a detachable remote control with a screen that lets you capture video remotely when there's no one else around to hit the "record" button. It also features DJI's latest tracking tech that will help you keep your subject centered in the frame, even in a crowd of people.  DJI's Osmo Mobile 8P is a more professional version of the Osmo Mobile 8 that arrived late last year. On top of smoothing out action video shot with your smartphone via the three-axis gimbal, it lets you track subjects natively on iPhones using Apple DockKit or on Android devices via the optional Multifunctional Module 2.  DJI The new gimbal is slightly beefier than last year's Osmo Mobile 7P and the Multifunctional Module 2 extends further from the side for extra clearance. As before, it has a built-in 8.5-inch extension rod and telescoping tripod feet.…