Sam Shead, writing for Business Insider:

Apple is looking to increase the size of its Siri team in Cambridge, according to sources with knowledge of the matter.

In a bid to make Siri that bit more useful to iPhone, iPad and Mac owners, Apple intends to hire at least half a dozen software engineers in Cambridge in the coming months.

And:

Apple’s Cambridge office is home to many of the employees from VocalIQ — a voice recognition startup that was spun out from the university and acquired by Apple in 2015 for up to $100 million (£80 million).

Notably, one of Apple’s open job requisitions is for a Siri Operations Engineer in Cambridge.