To be fair, the BusinessWeek announcement WAS dated Jan 30 - one day after AK threw away her iPhone and stopped using Instagram for good. 
http://www.businessweek.com/articles/2013-01-30/alicia-keys-is-blackberrys-new-creative-director
I would expect her handlers to attempt to keep tabs on potential social media gaffes like this one could have been.
She does look great in that suit.