Kelvin Harrison Jr., the rising star of last year's acclaimed indie films Luce and Waves, is in talks to join the cast of HBO's Euphoria next season, Collider has exclusively learned. Of course, when it comes to casting matters, it all comes down to scheduling, and given the current pandemic that has halted production around the world, it's unclear when the second season of Euphoria will go before cameras. Scheduling is especially tricky in this case, as Zendaya had been expected to start shooting the second season of Euphoria this spring while her Spider-Man co-star …