They don't have to hit you with them all at once. Just silently assign them as earned, just as in the past. I got 33 badges today. It seems they have decided to award them all on the last day of the month, as they did last month. They are darn ugly, too.
They are participation badges. You get them by contributing to the community. You can see what they are and how many you accumulated by going to your profile page.
