Apple has added what must surely be the last chapter to the book of Mac OS X 10.4, a.k.a. Tiger. Version 10.4.11 was posted yesterday. That's not to say that there won't still be a few footnotes added, after all Apple also just posted a pair of security updates to Mac OS X 10.3.9, a.k.a. Panther, which was superseded by Tiger more than two years ago.
Looking forward, the rumor mill is abuzz with talk about a soon-to-be-released ultra-portable Mac sub-notebook which is expected not to have an internal optical drive, and which will have solid-state mass storage, possibly in lieu of an internal hard drive. Probably to be marketed as a MacBook Pro, with a metal case, this new model will be noticeably thinner than and only about half as heavy as the current 15-inch MacBook Pro, but will share its LED screen backlighting, which makes a more vivid display possible and uses less power. This model is expected to be very popular.