The HTC RE camera will work in conjunction with your smartphone and a HTC RE app, HTC explains how it will work below.
With the Re app, sign in to your YouTube channel and activate live streaming. Once verified, broadcasting from your RE is a snap. Any live footage you wish to share is transmitted directly from RE to your smartphone, which then sends your broadcast to your YouTube channel.
HTC will be releasing a new version of their HTC RE app for smartphones, the app is expected to be available tomorrow and this will bring the new YouTube streaming feature to the device.