PalmSource, provider of Palm OS, announced it will hold its annual Developers Conference May 23-26, 2005 in San Jose, California. This year the company has added a Mobile Summit. The Mobile Summit has been designed to identify and explore new worldwide business opportunities for developers, licensees, operators and industry partners, showcase state-of-the-art wireless applications for smartphones, and provide valuable training and instruction on developing for the Palm OS platform. Registration for the conference is now open.