A pro forma invoice is the same as a commercial invoice which, when used in international trade, represents the details of an international sale to customs authorities.
TRID requires process changes to the loan origination life-cycle, particularly in the way that lenders approach the closing of loans. Under the new rule, the closing process needs to be at least three days ahead to meet the Closing Disclosure timing requirement.
Obviously the time frame varies from lender to lender. I've been waiting 3.5 months alread and still have no definite answer either way. The good news is that a negotiator has been assigned a few weeks ago! I'd say the average time from contract to closing is 3-5 months-assuming all the documents have been submitted.