updated 02:45 pm EDT, Wed April 29, 2009
Video card hints at 10.5.7
A change in the availability of a card for Mac Pros could, by extension, signify an imminent release for Mac OS X 10.5.7. The Radeon HD 4870 upgrade kit has for a time been listed as taking weeks to ship. Only recently, however, the availability has been switched to a more practical 7 to 10 days.
Though the change could simply be attributable to better inventory or increased manufacturing, video card releases for the Mac are rare enough that Apple sometimes links availability with the release of major operating system updates. Mac OS X 10.5.7 is known to be accelerating in development, and could be released as soon as this week, just in time for a delivery of 4870s. The card remains compatible with Mac OS X 10.5.6.