It could be psychological. When I stopped wearing an Apple Watch, it took a few months for the phantom tapping to stop. No joke. It showed me just how unhealthy the watch was for me personally.
On a side note, the render of the squared off design looks terrible. The Apple Watch is already not terribly attractive, but a new version with squared edges? Seems a step back.
I'm both horrified that you, or I could be having some kind of psycho-motor freak out from wearing a watch (like that feeling bugs are crawling on you, which I did encounter after finding a huge pavement ant nest, and found them all over me. It did take a few hours for it to subside. No lie: a doctor friend of mine said do a couple shots of Tequila. It works! The feeling of them crawling on me after two showers and a furious scrubbing went totally away! Who knew!)
Yeah, I read an article saying it was all psychosomatic, and I refuse to believe that. I mean, 1) My AW really doesn't harass me that much to develop a pattern, 2) I'm not that driven by it, and C) YIKES!!!