Well, it looks like secrecy isn't the only thing that Apple is doubling-down on these days. Speaking at D10, Tim Cook said that that Apple is "doubling down on Siri," adding that "you'll be really pleased with what you see in the coming months on this." He did also acknowledge that Siri had its shortcomings, but said that "customers love it," and "What makes Siri cool is that she has a personality." When it came to a largely non-existent iOS feature at the moment -- Facebook integration -- Cook said to "stay tuned,"