Tehran has since confirmed that the "text of the memorandum of understanding" has been agreed on and is to be signed in Switzerland, opening the door to 60-day negotiations "following verification of US commitments," including the lifting of the US blockade.
The circus continues. To everyone having bought flight tickets for summer, brace yourselves.
“To be signed Friday” doubt
If it does get signed I would still assume both sides intend to break it extremely quickly.