Mark your calendars: Sunday’s the day to cash in on Dr. Pepper’s long-standing challenge to Axl Rose.

The soft drink maker had said back in March that it’d give a free can of Dr. Pepper to “everyone in America” if Rose’s Chinese Democracy album actually came out in 2008. The album — currently available for free streaming at MySpace Music — officially comes out Sunday.

So that means Sunday, you can grab your free can and celebrate. Dr. Pepper says it’ll post coupons for free 20-ounce sodas on its Web site for 24 hours starting at 12:01 a.m. Sunday. The coupons will be good until the end of next February.

“We never thought this day would come,” Dr. Pepper execs said in a statement. “But now that it’s here, all we can say is: The Dr Pepper’s on us.”

Carbonated refreshment aside, though, does Chinese Democracy live up to its 14-year hype? The Los Angeles Times and The New York Times both have interesting reviews that sum the effort quite well. Slash, however, is thus far staying silent.

Related posts:

1. Why Can’t I Get My Free Dr. Pepper For Chinese Democracy?
2. Axl Rose Threatens Dr. Pepper Over “Shoddy” Web Promotion
3. More Free Stuff: Free Tacos at Jack in the Box, Free Dr. Pepper, and Free Quizno’s Subs