NVIDIA published the GeForce 280.26 WHQL drivers on its website, you can download them over here. Even NVIDIA admits in its changelog that there's not much new compared to the 280.19 beta driver from July 28th, most of the updates in the new release are for the tiny minority with a 3D Vision system.
For a complete summary of all the noteworthy changes, updates and fixes in the 280.26 WHQL driver keep on reading:
New 3D Vision Hardware
Adds support for new 3D Vision projectors: Acer X1111, BenQ W710ST, NEC NP-V300W; and new 3D Vision monitor: ViewSonic V3D245
New 3D Vision Profiles
Alice Madness Returns
Back to the Future (Episodes 1-5)
Call of Juarez: The Cartel
Chuang Shi Xi You
Dao Jian 2
Dou Zhan Shen
Dragon Ball Online
Dungeons and Dragons: Online
Gods & Heroes: Rome Rising
Harry Potter and the Deathly Hallows Part 1
League of Legends
LEGO Pirates of the Caribbean
Lord of the Rings Online: Shadows of Angmar
Might & Magic Heroes VI
Mount & Blade: Warband
Mount & Blade: With Fire and Blade
Red Orchestra 2: Heroes of Stalingrad
Rise of the Immortals
Serious Sam 3: BFE
The Darkness 2
The Lord of the Rings: War in the North
Virtua Tennis 4
Warhammer 40,000: Space Marine
Updated 3D Vision Profiles
Crysis 2 – rating upgraded to Excellent. NVIDIA recommends using the v1.9 game patch.
Deep Black – rating upgraded to 3D Vision Ready
Super Street Fighter IV: Arcade Edition – convergence changes and rating upgraded to 3D Vision Ready
Resolved Single GPU Issues
When installing the driver in Windows safe mode, the driver installation fails with an
"NVIDIA Installer failed" message: The NVIDIA PhysX driver installer is not compatible with
Microsoft's policy for safe mode, so the failure occurs when the PhysX driver is installed. To install the
NVIDIA graphics driver in safe mode, deselect the PhysX driver from the list of NVIDIA driver
components during safe mode installation.
GeForce 400 Series: "Out of Memory" error messages occur when loading certain saved DirectX 9 games
with 3D Vision enabled.
GeForce 500 series: Crysis 2 – when played using DirectX 9, weapons become semi-transparent.
GeForce 500 Series: Crysis 2 “Seat of Power” – weapons are not drawn correctly.
GeForce 500 series: World of Tanks – the game hitches and stutters, especially while moving around the view.
GeForce GTX 280M: “Could not find compatible graphics hardware” error occurs when installing
the notebook driver.
Resolved Multi-GPU Issues
3D Surround, GeForce 400 series: With three displays connected and enabled, after connecting a
fourth display, if cannot be enabled from the NVIDIA Control Panel.
3D Surround, GeForce 500/400 series: Two displays from the Surround group go blank upon enabling
extended view on a display connected to the non-Surround group GPU.
3D Vision: 3-way SLI is slower than 2-way SLI in 3D Vision mode.
3-Way SLI, GeForce 500 series: Displays connected to the HDMI connection on the second or third GPU
cannot be enabled from the NVIDIA Control Panel: To workaround, enable the displays using the
Windows Display Settings page.
Optimus, Notebook GPUs: With the NVIDIA GPU display set as the secondary Dualview display, a
YouTube HD video in full-screen mode is blank the first time it is played.
SLI, GeForce 500 Series: Crysis 2 “Seat of Power” – weapons are not drawn correctly.
SLI, GeForce 500 Series: Dirt 3 – the game stutters within the menu and occasionally during a race.
SLI, GeForce 200 Series: Crysis 2 – the game flickers when both PhysX and SLI are enabled.
SLI, GeForce 400 series: After restart the system, the PhysX processor setting on the Set SLI and PhysX configuration page switches from “Auto” to “GPU.”
SLI: Homefront – with SLI is enabled, shadows flicker in the game.
SLI: The NVIDIA Control Panel reports that the first GPU is not installed in a high-performance PCIe slot: This message can be ignored. It is an obsolete message that no longer applies, and will be removed in a
future driver release.