Have not seen a single ad; including the video just above this post. That's not an ad in my opinion, because it's on their channel and describes one feature. Only people already looking for HTC One info will ever see that.
If I was HTC, I wouldn't let Joe Consumer go 10 minutes in public without seeing my poster, seeing me on the radio or hearing my voice on every TV and computer monitor they walk by. At home, I'd be playing my ad twice during The Walking Dead and talking to HBO about a 10 minute ad just prior to the Game of Thrones release. You couldn't drive in your car without seeing billboards and I'd make sure it's the first device that salespeople at retailers show to consumers stopping in to check out the latest hardware for their yearly upgrade. Might even start a mailing or email campaign in conjunction with carriers, sniffing for people with looming upgrades, so they get the info straight from me... and not from snobby tech sites that want to compare it to "the S4". If I'm HTC, wtf is an S4? No, this is THE ONE.