they delayed it from spring 2010 to fall 2010 because they what the release it with a bigger library of games...
"We have decided to release the Motion Controller in fall 2010 when we will be able to offer an exciting and varied line-up of software titles that will deliver the new entertainment experience to PS3 users, " said Kazuo Hirai, President and Group CEO, Sony Computer Entertainment Inc. "We will continue to work to have a comprehensive portfolio of attractive and innovative games for the Motion Controller, not only from [Sony] Worldwide Studios but also from the third party developers and publishers, whom we have been working closely with. We look forward to soon unveiling the exciting software line-up that further expands and defines the PS3 platform as the ultimate entertainment system for the home."