Over summer vacation, second-floor Chalmers and certain sections of third-floor Olin got some work done. The changes seem to be on purpose rather than an elaborate (and expensive) prank perpetrated by a group of rogue professors.
Revamped Second-Floor Chalmers:
New computers and fancy chairs.
Third-Floor Olin:
The front-right study room of Olin received the tables that formerly occupied second-floor Chalmers.
New tables in the Parnassus room.
The circle desk/tree room now has neither a tree nor desks but two long tables.
The room formerly known as the Writing Center now boasts some swanky furniture and lamps that will most certainly give third-floor Chalmers an inferiority complex.
The Kenyon Thrill 
No! Not circle desk/tree room!
agreed! oh no!
Some of the seating looks just right for ad hoc psychoanalytic sessions.