I agree with this poster! You know something you're hiding from us!
The people deserve to know!
You guys are reading WAY to much into this.
1) It's inevitable that they know something - they've never let an anniversary pass without celebrating it here at the CIC. Should they keep those plans secret? Yes! It makes it more fun!
2) If they DID know anything from an official source or in an official capacity they could not share it regardless of who deserves to know.
So just cool it - and be happy something exciting is coming up.