ThinkSecret, writing for PCMagazine, claims to have additional details about Final Cut Pro 6, Final Cut Extreme, and long-rumored display upgrades.
Final Cut Extreme is said to enable the most demanding users to edit uncompressed 4K and 2540p video. Compatibility is said to include Red Digital Cinema's Red, Panavision Genesis, Dalsa Origin, Thompson Viper, Sony Cinealta, Phantom HD, and Arri D20 cameras.
To add to this report, MacRumors has received unconfirmed information regarding the hardware of the system. The Core card is said to utilize 4 Cell BE chips (as used in the Sony Playstation 3), with two additional "accelerator" cards being available, each containing 6 Cell chips. According to our source, the Core card will have 4 HD-SDI inputs, and a connector for a breakout box, as only 2 cards will be able to work in the Mac Pro (the only machine said to be compatible with the high-end system).
In regards to Final Cut Pro 6, the site believes the software will require a 64-bit chip (G5, Core 2 Duo, Xeon) to run. In addition, integration with Core Animation is reiterated, and the site adds that the software will indeed be Leopard-dependent.
Those high-end requirements will also allow the new Final Cut Studio to support resolution independence, a new feature of Leopard that allows an application's interface to scale with the display's resolution, ideal for users working with high resolution displays with a high number of pixels packed into each square inch.
Regarding displays, ThinkSecret believes that displays may be coming around NAB as well, including a new high-end display capable of supporting 4K+ resolutions. The site also believes that Apple may bump the 17" MacBook Pro display to support native HD video editing.
Display rumors have been floating around for a few months. Some previous rumors can be found here.