You have to love it when the company itself is responsible for information leak as is the case here.  It appears that AMD put in the names for a few unannounced graphics cards in the driver release files of Catalyst 7.9. 

The latest driver revision, numbered 7.9, includes fixes for all versions of Windows as well as specific improvements related to Enemy Territory: Quake Wars, the demo for which is out this week.

However, in the configuration lines the following cards are mentioned:

Radeon HD 2900 Pro
Radeon HD 2350 Series
Radeon HD 2600 X2 Series

We can fairly easily guess what the first two are – low-clocked 2900 XT, low-clocked 2400 – but what the 2600 X2 constitutes we’re really not sure. A higher-clocked version of the 2600, or even the much-rumoured CrossFire-on-a-card version?