• In 1987, the Beatles' albums appeared on compact disc for the first time.
• A highly collectible CD with the original long box.

Considering how much music had already found its way to CD, the Beatles were very late, so the digital rollout was a big deal. 
The new issues came out in batches and the excitement steadily built, peaking when Sgt. Pepper's Lonely Hearts Club Band came out on June 1, 1987, the 20th anniversary of its original release.

"It was 20 years ago today..." was perhaps the greatest record marketing hook of all time.