"New in Release 331.01.01f04:

• Graphics driver updated for Mac OS X Mavericks 10.9.2 (13C1021)
• Contains performance improvements and bug fixes for a wide range of applications.
• Includes NVIDIA Driver Manager preference pane. (included previously)

Release Notes Archive: This driver update is for Mac Pro 5,1 (2010), Mac Pro 4,1 (2009) and Mac Pro 3,1 (2008) users only

The Supported models tab has this list of cards/GPUs:
GeForce GTX 680, GeForce GTX 285, GeForce 8800 GT, Quadro K5000 for Mac, Quadro K5000, Quadro 4000 for Mac, Quadro FX 4800, Quadro FX 5600.

(The Additional Info tab has instructions on install. Supported macs/models is not always 100% accurate. In the past some have used them on other than what is listed.)
MINIMUM SYSTEM REQUIREMENTS for Driver Release 331.01.01f04
- Model identifier should be MacPro3,1 (2008), MacPro4,1 (2009), MacPro5,1 (2010) or later (later? 2012?)
- Mac OS X v10.9.2 (13C1021)"

The later OS X 10.9.2 build listed as new minimum requirement for .F04 is the build after installing OS X Security Update 2014-002, released April 22nd, 2014.

(IIRC, if you installed the previous Nvidia driver update the web/control panel should show this update available.) BTW: The nvidia drivers page above has a Mac CUDA driver link that has been updated now to direct to Nvidia CUDA for OS X v5.5.47 download page. (Previously it was linking to Oct. 2013 release of CUDA v5.5.28 for OS X.)
BTW: After Effects blog said CUDA 5.5.47 update fixed crashes seen with previous version.
(Update: On 4/16/2014, Nvidia posted CUDA 6.0.37 for Mac OS X.)
I don't have Mavericks on a Mac Pro so can't comment on these but there are 3 reports from PC (some flashed, one not) GTX560/GTX570 card owners in Tuesday's (3/4/2014) archive including 2 with problems after updating to the new drivers.
  

• iPhoto: Sharing libraries among multiple users
• Compressor 4.1: Basic troubleshooting
• Transitioning to Compressor 4.1
  
  
• Boot Camp: Partition alert message when using Boot Camp Assistant
• Boot Camp: Frequently asked questions about installing Windows 8
  
  
• iOS: Using Reminders
  
  (the following docs now archived but may be of use to earlier OS X users)
• Troubleshooting Mac OS X installation and software updates (OS X v10.6 and earlier)
• OS X v10.6: How to use Migration Assistant to transfer files from another Mac
• How to copy previously-burned DVD-R video discs

Page of How-To, Troubleshooting & Tips for Mac/OS X/iOS Users from Airplay to Thunderbolt.
  

• (400GB) Toshiba PX02SS Enterprise SSD Review (storagereview)
• Western Digital 1TB Black2 Dual Drive Review (PCWorld)
• Apple Rolls Out CarPlay ... (Apple press release, here's the CarPlay page)

Friday February 28th, 2014 News
• Radeon 7950 ROM Switch Tip for OS X 10.9.2 DisplayPort problems
• 2013 Mac Pro owner says OS X 10.9.2 may have fixed his sleep/restart problems
• Threads on OS X 10.9.2 Update Problems and Tips
• Updated Apple Support/How-To/Troubleshooting Articles:
  - Apple USB or Thunderbolt to Ethernet Adapters: First time setup
  - Apple MDP to Dual-Link DVI Adapter flickering & wake from sleep issues
  - Troubleshooting iCloud Photo Sharing and Shared Photo Streams
  - AirPlay mirroring might stop/drop connection on 802.11 b/g networks
  - Configuring a screen saver to display at the OS X login window
  - Using multiple displays in OS X Mavericks
  - Mac OS Extended volume and file limits
  - Troubleshooting iCloud Contacts
  - Troubleshooting FaceTime & iMessage activation
  
• Other News/Reviews/Tips/Tech:
  - Cook promises new products, says Apple TV no longer a 'hobby'
  - Seiki U-VISION 4K Upscaling HDMI Cable

For links to older news pages, see the Archives.