Well, it's certainly looking like PA governor Josh Shapiro is the vice-president's selection for the No.2 spot. Via the Philadelphia Inquirer:
Vice President Kamala Harris’ first rally with her yet-to-be-named running mate will be at Temple University’s 10,000-seat basketball arena on Tuesday, according to a source with knowledge of the planning.
The rally at the Liacouras Center will be Harris’ first campaign stop in Philadelphia since she became the presumptive Democratic nominee...