HTC and Sprint have finally updated the EVO 4G LTE and it brings with it a number of fixes. One of the big ones is that they got Google Wallet working again. Here's a list of some others:
  • Google security updates
  • Wifi disconnect issue
  • Time zone issue
  • Side loaded video pause issue
  • Random power cycling issue
  • Pioneer Bluetooth Car Kit connection issue
  • Gallery app crash
  • Calendar reminder (all day even time) issue

If you don't want to wait on the OTA update you can go to settings>system updates>HTC software update to handle it manually.

Source: Sprint