And ... we've got another software update for the HTC EVO 3D. This one specifically targets the HTC Watch app. According to mikephenix in the Android Central Forums, it corrects a little issue the EVO 3D had with syncing, as well as a wake issue.
Just go to Settings>System updates>HTC software update and let it do its thing. It won't require a restart or wipe any data.
More: EVO 3D forums