Apple's online store is down for maintenance in the moments leading up to its special event scheduled to begin today at 10:00 a.m. PT in San Francisco. The Cupertino-based company is expected to unveil new iPod nanos and revised full-sized video-capable iPods with touch-screen controls before kicking off a small concert by an unknown musical talent. Rumors are also circulating that the company could announce the addition of The Beatles music library in digital format for the first time via its iTunes Store after issuing an invite with the tagline "The beat goes on" which matches a press release issued just after the iconic rock band broke up in 1970.