Well, you can never be sure. That's true. But the restrictions is for iOS, and Apple is the only company that force them to remove stuff. so I would believe that is the only situation.
If they will have new restrictions for other stuff you will need to recode your game in either way, also if you use getSupportedAPIs.
Since getSupportedAPIs will not give you anything before the restriction is introduced. :)
So the only time it will be nice is if they will start to restrict the same functionelity for more than one platform. But if that will happen they will remove that feature toataly instead, and then you will need to recode your game as well hehe.