In January, Apple was quite busy with a lot of product announcements: Mac Pro, MacBook Air, Time Capsule, video rental offer on iTunes
To maintain the buzz related to Apple-branded products, and keep news networks speaking about them, Apple might have delayed the release of the Penryn transition for some of its hardware models.
One of our sources reports that new products will most likely be launch on February 12th, and it should be the new MacBook Pro.
[translation by xrissley]