I have just been awarded the Yearling badge on SO, but have noticed that now my Beta badge has disappeared from my listed badges. The summary at the top of the page shows 2 silver and 8 bronze, but the list on my details page says 1 silver and 8 bronze. Perhaps a bug?
Jeff had a change of heart about who could get a Beta badge. If yours was stitched on, but you really only signed up during the beta period and didn't actually participate until it was open, then your Beta badge has been revoked.
Sounds fair seeing as "actively participated in the private beta" doesn't match with just signing up and waiting around.
But yeah, that counter at the top is still showing the count with that Beta badge in, like the little piece of skin left after ripping the scab off. Or when you take off a poster from the wall and see that it's a different shade to the rest.