I don't think open dining is being considered.
However, I just found out that the stupid, archaic and unenforceable rule of requiring formal attire to be worn in all public areas of the ship on formal night is GONE!!!
Smart casual is now acceptable for those wanting to change into more comfortable clothes. Staying formal is, of course, still an option.
"Formal evening dress code standards will be enforced in the main dining rooms and specialty restaurants on all formal evenings." NOT the whole ship.
Congrats to X for finally joining the more casual/sensible 21st century.