"Presumably the next iPad will have Siri on it," said Ezra Gottheil, an analyst at Technology Business Research (TBR), noting that this could play to Nuance's strengths. Siri, the much buzzed-about tool that first appeared on Apple's iPhone 4S, is said to use technology from the voice recognition software specialist.Siri has certainly shone a spotlight on Nuance. The Burlington, Mass.-based firm's stock has climbed more than 47% in the last six months, despite missing analysts' expectations in its recent fiscal first-quarter results. A spokesman for Nuance told TheStreet that the company does not comment on customers' product plans. "With regard to our relationship with Apple, all I can say is that Apple licenses Nuance technology for certain of its products," he added, in an email.