The phrase "remastered treatment" means enhancing or improving something, usually a piece of media like music or a movie, by cleaning up the sound or video quality to make it sound or look better than the original version. Full definition
Would I like further improvements to presentation, would I like it on other platforms, would I like it to be given the full remaster treatment? (segabits.com)
Would gladly show more support and pay for Ico and Socom 1, 2 and 3 if they were to receive the same remastered treatment as Shadow of the Colossus. (blog.us.playstation.com)
Later, XBLA greats like Bionic Commando: Rearmed, Battlefield 1943, Call of Duty: Classic and After Burner Climax would receive the same remastered treatment. (xblafans.com)