"Apple has determined that a very small number of 3TB hard drives used in 27-inch iMac systems, may fail under certain conditions. These systems were sold between December 2012 and September 2013.

Apple or an Apple Authorized Service Provider (AASP) will replace affected hard drives free of charge.

Apple is contacting affected iMac owners who provided a valid email address during the product registration process to let them know about this program. If you have not been contacted, but think you have a 3TB hard drive, you can enter your serial number to see if it's part of this program...."

The S/N check and info on the replacement process are on the replacement program page which also has a link to contact apple regarding a refund if you paid for a repair/replacement due to this problem. (Apple notes "The program covers affected iMac models until December 19, 2015 or three years from its original date of sale, whichever provides longer coverage for you.")
  

• What Is The Future Of The Mac? (seekingalpha)
• Apple Should Never Stop Making Macs (forbes)
  
  
• OS X and iOS Unauthorized Cross Application Resource Access (XARA) (InfoSec)
  
  
• Leaked Docs: Apple Asked Sony For 4K Streaming In 2013 (valuewalk)
  
  (Below are Apple's D/L pages, check SU. If not having problems, I'd not update.)
• HP Printer Drivers v3.1 for OS X (complete D/L 573MB)
• Epson Printer Drivers v3.1 for OS X (complete D/L 1.2GB)

• How to identify MacBook Pro models
• Mac notebooks: Determining battery cycle count
• OS X: Identifying USB ports on your Mac
  
  
• Frequently asked questions about iBooks
• Turning off two-step verification for your Apple ID
• Get help with duplicate calendars or events on your iCloud calendar
• How to reset Open Directory on OS X Server using the command line
  
  
• (Troubleshooting) Gmail account cannot get or send email in iOS
• If you hear no sound or distorted sound from your iPhone, iPad, or iPod touch speaker
  
  (updates from June 18th follow)
• Set up and use iCloud Tabs
• Use Private Browsing in Safari on your Mac
• Printer and scanner software available for download for your Mac
  (revised 6/18 for driver updates - see above)
  
  
• How to use multiple iPhone, iPad, or iPod devices with one computer
• Get help with Mail on iPhone, iPad, and iPod touch

(Topic-based page of Tips, Troubleshooting & How-To articles for Mac/OS X/iOS Users.)
  

June 17th, 2015 News Archive
• WWDC developer news that nobody's talking about: Bitcode
• iOS and OS X Flaws Enable Malicious Apps to Break Keychain security
• Comparing OpenGL ES To Metal on iOS Devices w/GFXBench Metal
• Be careful when running the Adobe CC 2015 update
• OS Showdown: Mac OS X 10.11 vs Windows 10
• Micromat MachineProfile 1.0.24
• Apple How-To/Troubleshooting Article Updates: (partial list)
  - Exams and courses for service technicians
  - Apple Certifications: Getting Certified--CA/LA/US
  - Europe: Service Certification Training and Testing Centres
  - Apple Technical Learning Administration System FAQ
  - iTunes: Troubleshooting AirPlay and AirPlay Mirroring
  - Back up your iTunes library by copying it to an external drive
  - If your iOS device restarts or powers off while you're using it
  - Get help with your iCloud Photo Library
  - If you need help restoring from an iCloud backup
  - iMac: How to remove or install memory
  - How to Share files between two computers with target disk mode
  - Mac notebooks: Using and maintaining your Apple MagSafe Adapter
  - iMovie: Using Flip Mino and Flip Ultra camcorders
  - How to Block calls and block or filter messages on iPhone, iPad, or iPod touch

For links to older news pages, see the Archives.