I'm curious how good the job was since I don't have a 4K set. They need to drop the theatrical releases in HD and UHD now...
The hardest part was the clean-up from VHS to DVD. Lucas literally had them go frame by frame to clean it up.
DVD to Blu-Ray (and now to 4K) is more a case of upscaling and fukking with the metadata.
The Dvd's blew my mind, Blu-Rays looked very good; expecting 4k to make them pop but I'll never get over the change from VHS to DVD ()