Engadget's review has been updated. One quote I found of interest:
"Update: We finally put the EVO 4G LTE through our usual battery rundown test (looping a video with brightness and volume set to 50%, Bluetooth disabled, WiFi turned on but not connected and CDMA plus LTE enabled) and the phone lasted eight hours and 55 minutes, just like AT&T's One X -- this despite a larger 2000mAh battery (vs. 1800mAh on its cousin) and a strong CDMA signal. The difference is likely due to the LTE radio being enabled without a network available. We were unable to test HD Voice because the feature is not expected to start rolling out on Sprint's network until "late 2012", according to a spokesperson. Regular calls, however, sounded clear on both ends and reception was problem free."
HTC EVO 4G LTE for Sprint review (updated) -- Engadget