Raising new questions about when Sony will actually release hardware that can play high-definition movies recorded on Blu-ray disks, the company on Wednesday announced a range of new PCs that did not include any Blu-ray models. Sony has said that it has been working to finalize Blu-ray's copy-protection technology. It had recently said that it plans to begin shipping the Vaio RC300 series with a Blu-ray drive that can both record and play the disks by "early summer." Rival Toshiba has announced that it plans to introduce a laptop computer equipped with its incompatible high-definition HD DVD drive next month.