I tried to state the facts as I know them without having a personal opinion on whether it's a new transfer or not. Arrow has a pretty good reputation, but like every other studio/company, they have made mistakes too.
Below is the listed Bonus Material between Arrow's and Imprint's releases. Arrow is claiming they did a new 2K restoration from a new 4K scan of the original 35mm camera negative. Other than that it appears differences in the audio commentaries and an isolated musical score is the only other...