Same here. It's driving me nuts as I hear a SMS coming in, only to find it's LinkedIn, FB, Email, or some other app triggering a false alarm. I've also posted on HTC FB page to see if they response.
Yep, I have exactly the same problem. Upgraded on the weekend, and now calendar visibility has diminished.
It's nice to be able to pick my phone up in the morning and see where I'm supposed to be and when, without digging into the calendar manually.
It seems Google has killed off all Lock...