The HTC EVO HD LTE has been thrown out as a name for the rumored device, but since we don't know that it even exists that is subject to change. What we can reasonably assume is that- like AT&T's HTC One XL- this new EVO would be powered by a Qualcomm S4 processor instead of the NVIDIA Tegra 3 found on the international One X. The EVO 4G and EVO 3D both launched in June of their respective years so we can assume that we'd see an early summer launch for this next EVO flagship device. Unfortunately that puts it just outside of the "second half 2012" ship dates for the Qualcomm S4 Pro and it's Adreno 320 GPU, but one can hope.
When pictures of the HTC One X surfaced with that red camera ring we couldn't help but think EVO, and given HTC and Sprint's healthy relationship we expect to see a very high end EVO this summer, whether it be a One X variant or not. We'll keep our ears to the ground on this rumor, but we wouldn't be surprised to hear something one way or the other at CTIA in May.