Here's the first image of the gorgeous new Cadillac XTS, a modern full-sized replacement for the outgoing DTS/STS twin bus-sized sedans. Behold, the Cadillac of luxo-barges.

Confirming what was already well known, General Motors said today it would add two new Cadillac models next year — the big XTS and the small ATS, a 3-Series fighter whose profile was shown in this chiaroscuro teaser.

GM CEO Ed Whitacre's directed Cadillac to develop a RWD flagship model positioned above the upcoming Cadillac XTS according to Car&Driver. It's mostly speculation at this point, but for now dream sweetly of the Cadillac Sixteen. [Car&Driver]

The Cadillac XTS Platinum Concept was designed as a luxury sedan/personal headquarters — built for luxury and connectivity. It's like a giant Vertu cell phone encased in a cocoon of blubber hiding in a sleek, stylish spaceship-like metal muumuu.

Some outlets speculate on three-letter Cadillac naming conventions. Jalopnik brings you proof. This shot, taken today of GM's official show display, shows the concept revealed last night is, in fact, the STS/DTS-replacing Cadillac XTS — the Metamucil of Cadillacs.

The CTS Coupe's coming next year, the ATS and STS/DTS-replacing Cadillac XTS are in the works, but in Ed Whitacre's 60-Day Money-Back Guarantee commercial, there's a Caddy peeking out from under wraps. But which is it? Find out below.

Despite reports it was dead, today at GM's design studios, a bunch of Twitterati were shown a concept for the new Cadillac STS/DTS full-size replacement. It's called the Cadillac XTS — at least in concept form. But wait, there's more!

Blue hairs, rejoice! The Canuckian National Post reports Cadillac's big sedans, DTS and STS-replacing sedan has a name — Cadillac XTS. It'll be built at the Oshawa, Ontario Camaro plant on the Epsilon II platform. Sale date? Late 2011. [NationalPost]