Not likely, they might follow it up with new title or would go through the same process that SC brand went through between SCV/SCLS to SCVI.
Free Step Dodge
Kasumi-Phase-X
ChaolanLegacy
No, they will probably make a new DOA sometime in the future. KT is getting way too much money from people buying all the dlc's for DOA6, it was the same way with 5. Lets just hope that things will get better for this franchise soon.