Not sure if that's actually legit lol. It says theymos(bitcointalk admin) but it's domain is "theymos.e4ward.com". I honestly don't know about that.
the email address is legit but this is the first time I see a locked account with notice in its signature space
is this some kind of new system implemented by theymos? people would easily notice which account getting locked
P.S. How did you managed to upload birthday cake image in to your profile?
if he set today's date as his birthdate, the birthday cake will be shown on his profile automatically
Well I got similar notice half year ago. Wrote to that address and got a response that I need to wait for a ban lift a little bit and everything is ok since then.