It's apparently something specifically Disney Infinity 3.0-related, so it looks unlikely that's it's an all-new installment of the game, but we're assuming there are some pretty big announcements queued up related to figures and playsets. Possibly content from upcoming Pixar and Disney film releases?
See the livestream (which is embedded below) at March 1st, 2016 beginning at 10am PT/1pm ET.
Disney Infinity NEXT – Spring 2016:
On March 1, join Disney Infinity’s SVP and GM John Blackburn and VP of Production John Vignocchi for a look at what’s coming next to Disney Infinity 3.0. The artists, directors and producers who bring Disney Infinity to life take you behind the magic of the game. Join the conversation on twitter with #DisneyInfinityNEXT. To learn more about Disney Infinity, visit infinity.disney.com/