On Tuesday, May 12, the DNC's Rules and Bylaws Committee voted to allow for "flexible participation" of delegate participants to the Convention to be held in mid-August. This would allow the DNCC (Democratic National Convention Committee) "maximum flexibility" in making plans for the convention.
It is uncertain at this time whether the Convention will be held in-person, virtually, or a hybrid of both methods, but we know that, should the RBC resolution be passed by the full membership of the DNC, any delegate elected to a state party delegation can "accomplish their official business" and participate in the convention in some way. Additional information can be found here.