It is estimated that Apple spends about 1 Billion $ annually for using Amazon Web Services. And they also started to use Google data centers for their iCloud. At the same time it is known, that they build three data centers in Mesa (Arizona, US), Ireland and Denmark.

See http://www.pcworld.com/article/3045436/data-center-cloud/apple-said-to-move-part-of-cloud-business-from-aws-to-google.html

And now come the dot connecting: We know that TB is part of POET's TRAB and we now that data centers are called the low hanging fruits for POET. So maybe Apple's new data centers are the reason of TB being in the TRAB?