I am developing an android flight application using Mobile SDK, at the moment with Mavric 2.
Do Mavric Air and Mavric Air 2  are using the same SDK?

I'm glad to hear you're already interested in using the MSDK to develop the Mavic Air 2!  DJI does plan on providing Mobile SDK support (just like with the Mavic Air) in a future release but it's still being determined when that will happen - we greatly appreciate your patience. Please read updated Release Notes after each Mobile SDK release, to check if it's been supported