After maintaining an anti V2x stance for many years Tesla have finally accepted the inevitable! On the new Powershare page on the Tesla web site they say that:
Tesla vehicles* equipped with Powershare technology have onboard electronics that unlock your battery’s ability to provide power whenever you need it, wherever you are. Whether you need to power a construction site, pre-game tailgate, another electric vehicle or even your home during an outage, your Tesla vehicle with Powershare has you covered.
That sounds awfully exciting, but following the asterisk to the small print at the bottom of the page reveals that:
Tesla Powershare is currently available for Cybertruck only.

Without actually mentioning vehicle-to-load or vehicle-to-home Tesla suggest some use cases for the newly unlocked power: