Kia's updated flagship soldiers on with a second generation.

The new 2019 Kia K900 was caught testing in California this week, where spies were treated to a look at its interior, which appears to be complete. These photos give us a peek beneath its extensive camouflage.

Kia and Hyundai have sent mixed messages when it comes to differentiating their luxury flagship models. Now that Hyundai no longer has the Equus in its lineup (thanks to a re-alignment moving it under the company's luxury arm, Genesis), Kia's luxury sedan has a bit more room to make an identity for itself.

It's an opportunity Kia seems to be embracing. The new K900 seems to be adopting a more upright nose (not unlike the new Kia GT Stinger's) and, judging by the hood camouflage, may also pick up some hood vents similar also seen on its smaller sibling.

Inside, we see a lot of luxurious carry-over cues from the current K900. There appears to be an abundance of stitched leather (see the doors, steering wheel and center console). The analog-style clock remains on the center console as well.

One new touch that caught our eye immediately is the unique steering wheel treatment. This wood-trimmed off-center-spoke design doesn't even appear to be a shared part with the new Genesis G90, which makes it a welcome differentiation for Kia's take on long-wheelbase luxury.

This is the second time the new K900 has been caught, and its exterior camo remains largely unchanged. We'll probably have to wait until next year (or perhaps Los Angeles at the earliest) to get a look at it undisguised, and we expect it will go on sale late in 2018 as a 2019 model. Stay tuned.

Photos by Brian Williams.