Casual viewers of Star Wars are probably not aware of most of the changes made to the film since it's release in 1977, but there have been a lot! Fans (like myself) have been working for years not only to keep track of these changes but also to preserve each and every version, with the original Oscar winning 1977 version being the main priority.
Every few years, technology improves a little, and Star Wars gets an upgrade: VHS, laserdisc, DVD, Blu-ray and no doubt a 4K bluray will be next. The last official release of the 1977 version was in 2006 on DVD, but it used a laserdisc master tape so it's not as sharp as most DVDs.
For the first time ever, fans are actually ahead of the curve. Project 4K77 is likely to be completed before any official 4K UHD bluray. Until then though, there are plenty of official and fan made projects to choose from - so many in fact that you may not know where to start. Fortunately, one fan (NeverarGreat) has created this diagram to help you choose:
