According to Robert Scoble who got it from tracking FTC,Apple is buying Siri. (This has yet to be confirmed by Siri or Apple). The front story is mobile, specifically a bruising battle between Apple and Google. But once again the back story is semantic technology. Siri is not some cute iPhone app banged together in a garage over a Red Bull fueled long weekend. Siri has hard core semantic tech that originated from Darpa (just like that little system called the Internet).
Like the Facebook OpenGraph story, this is another example of semantic web going mainstream. The Open Graph front story was all about social media, but the back story was their adoption of RDFa. That has been a big boost to the semantic web community