"About MacBook Pro Video Update 1.0 (for OS X Lion)
This update addresses an issue where MacBook Pro (15-inch Mid 2010) computers may intermittently freeze or stop displaying video.
For detailed information about this update, please visit: https://support.apple.com/kb/TS4088.
(Revised doc from Oct 13th - "MacBook Pro (15in, Mid 2010): Intermittent black screen or loss of video")

System Requirements: OS X Lion 10.7.2"
(FYI/Update: Apparently this is included in 10.7.3 as the apple doc on the issue no longer links to this update, instead saying to update to 10.7.3 or later.)

I wrote a reader with an affected MBP that had commented on the problem here Oct. 14th to ask if this fixed it on his machine. But he noted running OS X 10.6.8, so per the updated Doc, he'll have to take it to an apple store or Authorized Service Provider for the update. "Apple will run a software diagnostic test to determine if your computer qualifies for service for this issue." (BTW - he later wrote he tried installing the update in 10.6.8 using Pacifist and warned others to NOT try that. It's not 10.6 compatible.)
   And even for OS X Lion, there's a note "If the symptoms persist after installing the update, select one of the service options below." (apple store/ASP, etc.) The last paragaph reminds me of the MBP/8600M case:

"Apple will service affected 15-inch MacBook Pro computers free of charge until two years from date of purchase. Apple will provide further extensions to this program as needed. This worldwide Apple program does not extend the standard warranty coverage of the affected MacBook Pro."

(Update/FYI: - As of 7/31/2012, the Apple doc notes 3 years from purchase, and still has the note that "Apple will provide further extensions to this program as needed." Same wording as was in the previous MBP/8600M repair program which also had its term extended several times over the years.)

Update on Service for 10.6.x user w/Affected MacBook Pro: (copy from Oct 26th news)
Follow-up from the reader with an affected 2010 MBP 15in running 10.6.8 and therefore can't use the software update for 10.7.2:

"More on the 2010 15in MBP video update (10.6.x user)
So... Went to the Apple Store here in Boston (just visiting) and took my MBP in to try to get the 'fix'. Turns out, unless you're running 10.7.2, the 'fix' is hardware based, i.e. Logic Board. I still might try to hack the software patch into submission, but will probably end up just getting the board replaced. It will be on Apple's dime, after all.
-Peter M."

(He noted Monday that his 10.6.8 system would only boot into safe mode after installing the update manually via Pacifist. Personally I wouldn't bother with that if Apple will swap out the motherboard - that way you get a later chipset, maybe even later stepping CPU, GPU, etc.)
My first thought when seeing the doc earlier this month was it's related to a specific revision of the chipset (or GPU), since apple lists specific production dates affected (mfg between April 2010 and February 2011). I guess the attempted software fix wasn't possible/practical for 10.6.x? (Or they figured it was cheaper to address it w/swaps vs dev/test time for software patch attempts, thinking most would eventually be on Lion anyway.)
  And even for 10.7.2 users that can apply the software update, they still have a note that:

... "If the symptoms persist after installing the update, select one of the (Apple store/ASP) service options..."

And a later update to the apple doc removes the link to the Lion updater and says to install OS X 10.7.3 or later (apparently rolled into the later Lion updates. It also includes says if problems persist after updates to take it in for service and notes a free repair extension for this issue (only).

(Update for Snow Leopard: On Nov 14th, 2011 Apple posted an updater for 10.6.8 users - see MacBook Pro Video Update 1.0 (Snow Leopard))

  

Apple TV Software version 4.4.2 adds support for the following:

Features:
• Photo Stream: View photos taken on your iOS device and pushed to your Photo Stream in iCloud.
  
  
• AirPlay Mirroring: Wirelessly stream what's on your iPhone 4S or iPad 2 screen to our HDTV.
  
  
• National Hockey League: Watch live games, view highlights, scores, and more.
  
  
• Wall Street Journal: Watch up-to-date news, business commentary, and financial analysis from leading experts.
  
  
• New Slideshow themes: Enjoy your photos on your HDTV with new slideshow themes: Photo Wall, Flip-up, and Shifting Tiles.
  
  
• Netflix: Support for subtitles when available.

Apple TV devices with software version 4.4 and 4.4.1 have an issue with updating software to later versions. The recommended way to resolve this is go to Settings -> General -> Reset -> Reset All Settings, prior to updating. If you apply the software update without resetting all settings first, the updater will reset the settings for you.
(From the above wording, your AppleTV settings will be reset regardless.)

Once the Apple TV has been reset, you can then successfully update to the latest software by going to Settings -> General -> Update Software.

We recognize that this is an inconvenience and apologize."

They left out this note regarding NHL from the 4.4 update. "Live and on-demand games require a NHL subscription. Blackouts apply. See nhl.com/appletv for details.".
(Apple also posted a doc about Upgrading from v4.4 or 4.4.1 but it's just a copy of the tips included above.)
 

• Celebrating Steve Jobs' Life (Video)
  (Video of Oct. 19th, 2011 event at Apple campus)
• Steve Jobs: Revelations from a tech giant (60 minutes)
• Meet ARM's Cortex A15: The Future of the iPad, and Possibly the Macbook Air
• How Apple's A5 Chip and iOS 5 Will Change Mobile Gaming

• MacBook Pro (15in, Mid 2010): Intermittent black screen or loss of video
  (Update released - see above post)
• iOS: Installing carrier settings updates
• iOS: Unable to update or restore
• iOS 5: Purchased ringtones or tones removed after update
• iOS 5: Video not saved if device unexpectedly turns off
• iTunes Store: How to enable Automatic Downloads
• iOS: Apple Wireless Keyboard compatibility
• iOS 5: List of available trusted root certificates
• iOS 5: Font list
• iOS: Understanding Restrictions
• Cards: Frequently asked questions
• iCloud: Photo Stream Troubleshooting
• iCloud: Troubleshooting creating backups
• iCloud: Troubleshooting Find My iPhone, iPad, iPod touch, or Mac
• iPhone 4S: Troubleshooting Siri
• iPhone: About the Cellular Data setting
• iOS: Troubleshooting Messages
• iOS: Troubleshooting carrier activation issues
• iOS: Unable to import photos or device not recognized as a camera
• Copying personal photos and videos from iPhone, iPad, or iPod touch to your computer
• New equipment: Odors may be present short-term
• Apple TV (2nd generation): Upgrading from Apple TV software version 4.4 or 4.4.1