Other recent developments speak to the Beatles' enduring popularity: To boost local tourism, the city of Hamburg -- where the Beatles lived when they were still the Fab Five -- recently opened a Beatles-themed museum; it also renamed a local square Beatles Platz.

The Mirage Las Vegas is set to host a Beatles-themed installment of Cirque du Soleil, and a digitally-remastered Beatles box set is set to release later this year. Old Beatles ticket stubs are worth up to $750, and autographed LPs are selling on eBay (EBAY) for thousands of dollars.

On the more bizarre side of Beatlemania: One English couple is selling a couple of barber chairs once used by the band. After coming across the chairs at a salon supply sale, the couple is hoping to get around $16,000 apiece for them. They’re even trying to sweeten the deal by including a lock of John Lennon’s hair, which they themselves bought on eBay for around $240.

Despite their unceasing appeal, the Beatles have proven surprisingly inaccessible in the digital world. That could soon change. In 2007, the band settled its long-running lawsuit with Apple (AAPL), inspiring speculation that the Beatles would soon appear in the company’s iTunes music store. (The rumors that increased the value of Apple’s shares 6%.)

And given that Rock Band may usher in the group’s iTunes debut, a whole new Beatles revolution could be underway.