Nothing should ever be announced or "effective" April 1.
https://www.google.com/search?q=founding+date+apple&oq=found...
I learned that April 1 jokes on the internet are often taken the wrong way even when there are ample reasons to realize it is a joke.
See http://osdir.com/ml/finance.ledger.smb.devel/2008-04/msg0000...