http://www.reddit.com/r/Bitcoin/comments/1ztbnd/did_satoshi_update_his_public_key_yesterday/
If you follow the link, then you come to this:
http://pgp.mit.edu/pks/lookup?search=satoshin%40gmx.com&op=index
Now follow further and here comes the clou:

http://pgp.mit.edu/pks/lookup?op=vindex&search=0x18C09E865EC948A1
Mr. Dorian S. Nakamoto
WTF???