Richard Wilkins, entertainment editor for the Today Show in Australia, tweeted us tonight to let us now that the details will finally be revealed on tomorrow’s show for Jimmy Buffett’s concert in January.

The Today Show allows you to watch live online. So if you’re not in Australia, or you’re on your computer, go to today.ninemsn.com.au and click on Live Online under Watch TODAY Your Way.

For those of you in the US, 7:40 am Sydney time corresponds to 3:40 pm ET.

Jimmy Buffett is lending his voice to a Mark Twain tribute album that is being put together by the Mark Twain Museum in Hannibal, Missouri:

The country-flavored CD is still a work in progress. Some of the audio is still scratchy around the edges. Carl Jackson’s voice fills in for Jimmy Buffett’s throughout the current product as he waits for Buffett, a late contributor, to finish recording his spoken-word turn as Twain’s ragamuffin hero Huckleberry Finn.

Clint Eastwood plays the voice of Twain in the dialog with Buffett that will buffer between the musical numbers on the album. Other artists lending their voice and musical talents include Brad Paisley, EmmyLou Harris, Vince Gill, former Shenandoah frontman Marty Raybon, Doyle Lawson and Quicksilver, and more.

Mark Twain has been very influential on the music and writings of Jimmy, most notably on the songs That’s What Living Is To Me and Take Another Road.

The museum hopes to release the album in time for the holidays.

While Jimmy’s not doing any public shows this month, he does have three private shows lined up this weekend.

On Saturday he’ll perform at the Andy Roddick Charity Gala in Austin, Texas. Then on Sunday he’ll head to New Orleans for the New Orleans Artists Against Hunger & Homelessness gala. And on Monday Buffett will head back to Texas to play a private show for invited American Express cardholders at the Toyota Center in Houston.

Please join us for a private concert with Jimmy Buffett and the Coral Reefer Band at Toyota Center in Houston. Attendance for you and a guest is complimentary — consider it a thank-you for being such a valuable Cardmember. This unique experience is exclusively for American Express® Cardmembers.

Availability is limited. Tickets are available on a first-come, first-served basis. Invitations and personal codes are non-transferable.

You will receive your two tickets via e-mail on Thursday, December 2. Print at home is the only option to receive your tickets.

Offer is available to solicited Cardmembers only. This is a limited time offer and quantities are limited. No purchase or payment necessary. Offer begins at 12:00 p.m. CST on November 8, 2010, and continues while supplies last. Cardmembers may use their unique code once. Admission is non-transferable. Must be 21 years of age or older to consume alcohol. Please drink responsibly. By registering, Cardmembers agree to these terms and conditions.

More details available here.