HTC is focused on providing timely software updates for your phone.
You'll find information about a software update—or FOTA which is in short for Firmware Over-The-Air—on the HTC support site.
When you're connected to the Internet using Wi-Fi, go to , and then tap Check now.
Please note that phones don’t get the update at the same time since the update is usually rolled out in batches to avoid server overload. If you are on a carrier contract, the process may be even longer as it involves carrier approval at multiple stages.