Not sure if I'm reading this right, but according to Hammil the Rebel Fleet/Falcon stuff was added a bit closer to release, although it's been long mentioned that the only thing added was a slight shot to explain where Luke and co. were relative to the Falcon. However this seems to imply the film would've possibly ended with the Falcon escaping, Vader's disappointment but still not bothering to punish Piett.

https://www.ign.com/articles/star-wa...g2L6u4jjNvmWN8

The finished ending of course makes more sense considering the credits, which usually have an upbeat reprise of the Star Wars theme. Kind of wonder if the film ended with Vader, if the end credits would've had a different tone?