How many Kingdom Hearts titles will there be

Kingdom Hearts has approx. three new upcoming titles. This will be in addition to the six other stories that have made up the series as a whole: (Birth by Sleep, Kingdom Hearts, Chain of Memories, 358/2 Days, Kingdom Hearts II, and Coded)

The three new titles include 3D: Dream Drop Distance, Kingdom Hearts III (officially in production), and a possible Birth by Sleep Vol. 2. We don't know, as of yet, wether or not the series will progress after Kingdom Hearts III, but there are numerous theories. No other titles have been officially annonced or confirmed.