If you follow @jack, otherwise known as Twitter co-founder and current Square CEO Jack Dorsey, then you'll know that at about 2 PM EDT today, he tweeted the cryptic Instagram (a company he's invested in) message and photo shown at right. A square with apples in it -- that's pretty obvious there, Jack.
Square card readers are currently selling in Apple retail stores, but it appears that there's more to the story. The company has a press conference scheduled for 10 AM PDT at its headquarters in San Francisco, and Dorsey's hint looks like a not-so-subtle message that the two companies are going to announce something big.
I speculated yesterday that
