August passed with no final rule for EB-5 regulations. OMB has not even received the regulations for review. USCIS Director Cissna told Congress in June that he thought it would be tough to finalize the regs before Sept 30, 2018, and I don’t expect any action soon.
The Regional Center program is currently authorized through 9/30/2018, pursuant to Consolidated Appropriations Act, 2018, Division M—Extensions, Title II—Immigration Extensions (PDF p. 702).