Although we're still waiting on the global announcement, LG Korea has already announced the Optimus 4X HD one of the first Tegra 3 based smartphones. The 4.7-inch display is expected to have a 1280 x 720 IPS panel. LG also claims a device thickness of 8.9mm, although it's unclear if that's a uniform thickness or just at the device's thinnest point. 

NVIDIA's Tegra 3 powers the 4X HD, although the version in LG's phone runs at up to 1.5GHz compared to 1.4GHz in ASUS' Eee Pad Transformer Prime. As Tegra 3 varies its max clock speed with the number of active cores, it remains to be seen what the max frequency is with all four cores active.

We expect to see the Optimus 4X HD and learn more about it at MWC next week.