Dji, please answer this questions:
1. Will support Smart Controller?
2. Will support Smart Joystick from FPV ?
3. The batteries are compatible between Air 2 and Air2S?

Thank you.

This information is pretty well known. Search the forums before asking the same question others have asked.
The product page also has all of this information.

It supports the smart controller.
Smart controller NO.
Batteries are the same.

Hi, FB: GeoDrone4K. Thanks for reaching out and posting your inquiry. Regarding your questions, please refer to the following answers.

1. Will support Smart Controller?
-Yes, the Mavic Air 2S supports the DJI Smart Controller.

2. Will support Smart Joystick from FPV?
-No, the Mavic Air 2S doesn't support the DJI FPV Remote Controller 2

3. The batteries are compatible between Air 2 and Air2S?
-Yes, they're cross-compatible.

Two out of three ain’t bad ;+)