The latest SDK 4.14 is still in trial (testing) by 3rd party programmers. Some developers have incorporated it into their apps Maven, Copterus are releasing Beta versions of their Apps. Litchi is refining and beta testing as well, last report I have seen is it has a few bugs (SDK) which is common and developers are reporting them back to DJI to re-release a update. Normal for these type of things...just so you know if you want autonomous missions (WayPoints), these are still done via virtual stick method and not Litchi norm where missions are uploaded to FC...and looks to never be.