This has always confused me: have tests typically been announced in the past, or is this a recent development? In my experience, up until very recently, the only time I got an alert that a test was open was when I got my email invite. I assumed that all during Alpha and the parts of Beta that I've been a part of the tests were just random and if you caught them, good for you, if not, better luck next time.
Where did this sense of entitlement that we always know when the test will be opening next come from? Not that I don't enjoy the information, just wondering why all of a sudden it became such an obligation for the devs to let us know when its open.