AT&T has announced two new HTC Android smartphones headed to its network, the HTC One X+ revealed today, and the HTC One VX. Apparently “coming soon” to the carrier’s LTE service, the One X+ runs Jelly Bean on NVIDIA’s 1.7GHz quadcore Tegra 3, while the smaller One VX has a 1.2GHz dualcore Snapdragon S4 chipset and runs Ice Cream Sandwich.

That’s an odd mixture of platforms, and it’s disappointing that HTC couldn’t bring the One VX up to speed with Android 4.1 like its larger sibling; it also gets the older version of HTC Sense 4, rather than Sense 4+ on the One X+. The One VX has a 4.5-inch 960 x 540 Super LCD 2 display, 8GB of internal storage, and 1GB of RAM, together with NFC, WiFi a/b/g/n, and Bluetooth 4.0 with aptX audio.

There’s also a 5-megapixel camera with f/2.0, 28mm wide-angle lens, a backside-illuminated sensor, LED flash, and HTC’s Image Chip processing. The front-facing camera musters up VGA resolution. Beats Audio is also onboard, with the headphone jack doubling the typical output voltage to 1V, helping drive beefier cans.

As for the AT&T One X+, that’s the same 4.7-inch device as we saw unveiled for Europe earlier today – check out our hands-on here – only with LTE support for AT&T’s 4G network.

No word on specific release dates or pricing at this stage.