There's currently no ETA. There have been multiple requests for different teleport methods and such. I've said that I won't look into adding additions like these, unless I have the time to develop the entire system all at once for both custom traversing methods and stamina. My agenda is full for quite the upcoming period however.
Of course, actually drinking the potion is calling a specific API method. But you can obviously figure out that there's much more logic needed with a script of this scale to properly handle new features .
Please look at the above .