• Security update for mDNSResponder
  "Current versions of Apple products use the updated version of Bonjour.
  For previous versions, Apple has issued a security update.
  
  Which Apple platforms are affected?
  OS X:
  
  • Versions prior to OS X El Capitan v10.11.1
  • Versions prior to OS X Yosemite v10.10.5 with Security Update 2015-004 Yosemite
  • Versions prior to OS X Mavericks v10.9.5 with Security Update 2015-007 Mavericks
    
    
  • iOS versions prior to iOS 9.1
    
    
  • watchOS versions prior to watchOS 2.1
    
    
  • AirPort Base Station Firmware versions prior to 7.7.7 and 7.6.7"
    
    
  (Also notes to check with vendors of any products you use that may be affected.)
  
  Regarding the "for previous versions Apple has issued a security update", I assume they are just saying a fix was already in the OS versions/security updates later than the "Prior to" list above - not that there are any new updates being released for older OS versions.
  (Articles about security fixes in some past updates have been recently revised.)
  There's been no security updates for OS X v10.8.x and earlier for some time now.
  Once El Capitan was released, 10.9.x is the oldest still getting security updates.
  (There was a Mac App Store/Certificate Update for Snow Leopard on Jan. 27th, 2016.)

Apple also revised several past docs about Security fixes in some previous OS updates.
  

• Apple Developer News notes Beta 3 of OS X 10.11.6, iOS 9.3.3, tvOS 9.2.2 available
  
  
• Up to 40TB Capacities for OWC External Storage Solutions (sponsor blog)
  
  
• Adobe Photoshop updates include Content-Aware Crop and Face-Aware Liquify (MW)
  
  
• Apple wins case over "Error 53" wiped iPhones (fortune)
  
  
• Microsoft SharePoint iOS App (iOS 8.0 or later)
  
  
• Youtube iOS App v11.23 (iOS 8 or later)
  - Fixed issue where videos don't autoplay.
  - Bug fixes and stability improvements.

• Mac computers: Frequently asked questions about using HDMI
  
  
• How To Manage your iCloud storage
  
  
• About security content of AirPort Base Firmware Update 7.6.7 and 7.7.7
  (Updates released May 24th included the mDNSResponder fix, but no doc about it was posted then.)
  
  
• Adobe Flash Player updates available for OS X on June 20, 2016
  (A Flash update noted in June 16th news)
  
  
• About the security content of OS X v10.11.5 and Security Update 2016-003
  
  
• About the security content of OS X 10.11.1, Security Update 2015-004 Yosemite, and Security Update 2015-007 Mavericks
  
  
• About the security content of iOS 9.1
  
  
• About the security content of watchOS 2.1
  
  
• About the security content of watchOS 2.0.1

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

June 16th, 2016 News Archive
• Security updates for Adobe Flash Player
• Tech 101: We Explain the New Apple File System (APFS)
• Testing, Optimizing, and Analyzing Your Apps (apple developer)
• TestFlight v1.4.1 Update (release notes)
• Award-winning adventure game Life is Strange at Mac App Store
• Freeware VM VirtualBox 5.0.22 Update
• Chrome 51.0.2704.103 (includes 3 security fixes)
• Crucial MX300 750GB SSD Review
• Synology DiskStation DS216+ and DS216j reviews
• LG 55EG9100 OLED HDTV Software Update 4.05.05 (D/L)
• LG 55EF9500/65EF9500 OLED UHD TV Software Update 4.25.05 (D/L)
• LG 55EG9600/65EG9600 OLED UHD TV Software Update 4.25.05 (D/L)

For links to older news pages, see the Archives.