Esta resposta usa informações de todos os trailers e teasers. Espero que você não se importe.
Do artigo, Star Wars Episódio 7: O que aconteceu com o Millennium Falcon na época de The Force Awakens?
O interior:
Early photographs leaked from the set showed the Falcon with a very different decor inside. Instead of the utilitarian and somewhat spartan designs inside, the modern ship boasted plush brown leather seats and wall padding. It very much looks like someone has finally given the fastest hunk of junk in the galaxy the TLC it always deserved.
O Exterior:
As mentioned, the Falcon lost her top of the line sensor dish at the end of Jedi. Solo wouldn’t have been impressed as that cost him a lot of credits and had the capability to detect Imperial ships long before they were aware of him. Until the announcement of the sequel trilogy we thought the Imperial threat was largely over, but as we are learning, the Empire persisted and still survives as the First Order by the time The Force Awakens starts. Now the Falcon has a different sensor dish, one much more like the primary sensor array carried on top of Blockade Runners (the first ship we see fleeing a Star Destroyer at the start of Star Wars back in 1977). If that’s the case, the Falcon has maintained her all-important tactical advantage.
