How should one describe a future academic appointment I am currently a grad student, and will have an appointment as an assistant professor in a few months.  For various conferences I am attending, I am to provide my title.  I would prefer to mention my future position, if for no other reason so that people I meet will know where to find me in the future.  Is there a term for a future appointment like "President-elect" or "Chairperson-elect" that can be used?  "Assistant professor-elect" seems strange and "Assistant professor (effective August)" seems clunky.
I would not worry about the title as much as the new location. Assuming a name badge that looks something like

Strongbad
PhD Student
Crazy Go Nuts University

I would add a hand written line to make it

Strongbad
PhD Student
Crazy Go Nuts University
Krusty's Clown College (starting August)

I would only do this if the contract has been signed and there is no contingency on you finishing your PhD. If you have to finish your PhD to start the assistant professor position, then there is no guarantee you will be starting in August.