Now that the 2015 Chevrolet Tahoe, 2015 Chevrolet Suburban, and 2015 GMC Yukon have been revealed, the only big GM SUV left to debut is the 2015 Cadillac Escalade. We can provide a peek into that luxury SUV's interior with a fresh set of spy shots that leaves little of the 2015 Escalade's interior to the imagination.

Take a look at the cabins of the new 2015 Tahoe and 2015 Yukon and you'll immediately notice a difference in the interior of this 2015 Cadillac Escalade prototype. The center stack is, as you'd expect, filled with touch-sensitive controls finished in piano black with silver trim for Cadillac's CUE infotainment system. The navigation screen appears to be in the same location as in the new Tahoe and Yukon, and it's unclear whether the Escalade will feature the nifty hidden center stack compartment we've also seen on the XTS sedan.

There's more product differentiation in the 2015 Cadillac Escalade's instrument cluster that, as on high-end XTS vehicles, appears to be completely digital. We'd be surprised if the new Escalade doesn't offer a head-up display.

As for this 2015 Cadillac Escalade's exterior, we again see vertical LED light pipes in the lower front fascia, with a big Cadillac grille and a huge badge in the center. Interestingly, the spy photographer said the taillights seemed to stretch all the way up the D-pillar, similar to what we've seen from the outgoing CTS wagon.

GM's latest version of the 6.2-liter V-8 produces 420 hp and 460 lb-ft of torque, and even though that engine is already in the less expensive 2015 GMC Yukon, it certainly wouldn't be a bad place for the Escalade to start. While the Escalade will debut in regular (Tahoe) and extended-length (Suburban) versions, before long the SUV may be joined by a three-row Cadillac-branded crossover.

We expect the 2015 Cadillac Escalade will debut later this year.