Yeah, it's almost like they can't get the F8n A/D converters anymore so they spun a new revision with the F6 converters and slapped "Pro" on the label. Hopefully they're working on a real successor to the F8n. I'd love to see them take the eq and dynamics from their other products and move them into the F series for live use, as well as more modern features (record to SSD, USB-C, etc).
Makes me sad that my F8n most likely won't get any more updates, but at least I'm not tempted to upgrade!