Earlier today HTC made the One X+ official, which includes a faster Tegra 3 SoC, 64 GB of NAND for the AT&T version, LTE from an MDM9215, improved 1.6 MP front facing camera, and a larger internal battery. The One X+ with LTE will be headed to AT&T in the coming months in the same form as the international One X+ with LTE.

Alongside that availability note however is the announcement of another handset, the HTC One VX, which will be exclusive to AT&T and looks like it sits somewhere between the One S and One V. The One VX includes a Snapdragon S4 Plus MSM8930 SoC, which is 1.2 GHz dual core Krait and includes Adreno 305 graphics. MSM8930 includes the same air interface support as MSM8960 as well (UE Category 3 LTE, up to DC-HSPA+, and 1x/EVDO). In addition the One VX includes what looks like the One V's camera system, the same 5 MP CMOS sensor with BSI, F/2.0 optics with 28mm focal length, and HTC ImageChip. The One VX also includes something we haven't seen on a lot of HTC's phones lately - microSD expansion. Display is a qHD (960 x 540) 4.5" Super LCD. 

The One VX will launch on AT&T initially running Android 4.0.4 and later get updated along with the One X to Android 4.1 and Sense 4+. The way the One VX is positioned it will likely launch at a price significantly below the One X+. 

The HTC One X+ and One VX announcement is a bit scant on availability details for the two devices, noting that both will be available "in the coming months." Interestingly enough the announcement notes the One 8X will be available in November.