Verizon has started pushing out a new update to HTC 10 units on its network. It's a security update that arrives as version 2.41.605.18, but the carrier hasn't specified the month included.
The handset received Android 7.0 Nougat update back in March this year, so we'd guess the former flagship is now on either April or May security levels.
As is usually the case with OTA roll outs, it may take sometime for the update to hit your device. Meanwhile, if you feel impatient, you can manually check for the update by heading to your phone's Settings menu.