So, HBO pulled through mainly apparently due to massive grassroots efforts DC put forth.
WHOOOOO-HOOOO.
DCist has the full scoop here: click click

But here is the important info to know:
-it will start on July 20th
-it will go on till August 10th (every Monday)
-first movie will be Close Encounters of the 3rd Kind and speculations include Dog Day Afternoon and Rebel Without a Cause as other possible candidates.

Rejoice DC.
(p.s. NOMA summer screen still kicks off today)