iOS 9 for users and developers covers new features in iOS 9. This includes On Demand Resources, App Thinning, and storage usage. Other changes include Keyboard changes, improvements to Search, changes to the way News is handled. Additionally, updates to Siri, new features on Notes, Multitasking, System Fonts, updates in Security and file management. One of the biggest changes is Safari, Apple Maps, and even improvements to the Apple Watch.

The book comes is available in two versions from Apple. The first is ePub and the second is the iBooks edition. Both are priced at $3.99.

You can also purchase it from Amazon as well for $3.99.

This data is from approximately 7:00PM Central Time on 09/16/2015.

From Apple, the Verizon Silver 128GB iPhone 6s is now shipping in two to three weeks. From the Carriers:

• AT&T: the 128GB Space Gray iPhone 6s Plus is now shipping in 4 to 5 weeks.
• T-Mobile: the 128GB Rose Gold now has an unknown status.
• Verizon: the 16GB Gold iPhone 6s is now shipping by 9/30.

As is the case in the previous years, I have written an e-book about OS X 10.11 El Capitan.

It is available now for pre-order on Apple's iBooks Store in both iBooks format as well as ePub format. The cost for the e-book is $3.99. The book will be released on September 30th, 2015.

OS X 10.11 El Capitan for Users, Administrators and Developers covers many of the new features within the operating system. For users, we cover the new Split View, the changes to the cursor, the new San Francisco Font, changes to Spotlight, upgraded Notes, improvements to Apple Maps, and the new features of Safari.

For administrators we cover the big changes to application assignment and other changes to Profile Manager, the overall look, some file sharing changes, the improved softwareupdate command, the implications of security changes, and built-in application versions.

For developers we look at the new Apple Developer account, Xcode 7, the new frameworks like Metal, GameplayKit, and Network Extension. We also look at the changes developers need to make for security, Swift 2, changes to Objective-C and CloudKitJS.

This data is from approximately 7:15PM Central Time on 09/15/2015.

From Apple, the 128GB Rose Gold iPhone 6 on AT&T is now showing 2-3 weeks. This is the first AT&T model to not have 9/25 availability.

From the carriers, Verizon has the biggest changes.

iPhone 6s

• 16GB Silver and Space Gray now 9/30
• 16GB Rose Gold slips a week to 10/14

iPhone 6s Plus

• 16GB Rose Gold slips a week to 10/21.
• 128GB Gold slips a week to 10/14.
• 128GB Rose Gold slips a week to 10/21.

This data is from approximately 7:00PM Central Time on 09/14/2015. Sprint has clarified some of its shipping times. T-Mobile still has two unknown estimates for the 64GB and 128GB iPhone 6s Plus Rose Gold. Verizon's iPhone 6 128GB Rose Gold has slipped a few days, but still at the end of September.

This data is from approximately 7:30AM Central Time on 09/14/2015. This now includes carrier sites as well. The biggest change is in T-Mobile availability. It has been clarified.

This data is from approximately 10:00AM Central Time on 09/13/2015. This now includes carrier sites as well.

This data is from approximately 18 hours after the start of pre-orders, which began at 12:01 Pacific Time this morning. All iPhone 6s Plus models are showing 3 to 4 week shipping times. If you had not pre-ordered early today, it will now be the end of October, or so, before your phone arrives.

The Rose Gold option for the iPhone seems to be very popular, there are only a few models left for delivery on 9/25.

The 4th generation Apple TV was announced earlier this week and one of the aspects to its new tvOS is that applications can only be at most 200 megabytes. This has irked many developers and it has been speculated that this limitation may hinder adoption of the platform by developers. The 200 megabyte limitation means that saved games will need to be stored in iCloud Drive, and any content for the applications will need to be stored and downloaded from iCloud or from another server.

With iOS 9, this is not a problem, because tvOS is based upon iOS 9, and iOS 9 has a new feature called "On Demand Resources". On Demand Resources will allow information to be downloaded prior to being needed, then used, and once no longer needed, possibly deleted from an iOS device if space needs to be cleared up.

While looking deeper into OS X 10.11 El Capitan and its Caching Service, this got me to thinking. What if Apple were to implement caching server on its next version of the Airport Extreme?

A bit of information about Caching Server. OS X 10.11 El Capitan's Caching Server is capable of caching some content. This content could be one of the following:

• Mac App Store Apps.
• iOS Software Updates.
• iOS App Store Apps.
• iBooks Content.
• iCloud Drive documents.
• CloudKit data.
• iCloud Photo Library photos.
• On-demand app resources.

With the caching server, all of the information that comes from iCloud is encrypted with keys that are only available on the device. The ability to cache some content locally could make the limitations of tvOS relatively moot points for some of the critics. Yes, a small segment of the population would likely buy such a product, but if it were an option on the next Airport Extreme, or Time Capsule, it could be a boon for users and developers alike.

If Apple really wanted to, they could create the Airport Extreme Pro, that would provide these features, or even just a dedicated Airport Caching device. Alternatively, Apple could allow, through a firmware update, anybody who has a Time Capsule or Airport Extreme with a hard drive attached, to dedicate some space to that. I know I would absolutely put some space aside to cache iCloud Content. It is just a thought that I had while doing some research.

Last year I did some charts with availability of the iPhone 6 and iPhone 6 Plus. This year, I will do some charts again. I do not know how often I will update them. But each will be a new post.

This data is from approximately 5 hours after the start of pre-orders, which began at 12:01 Pacific Time this morning.

Notes: T-Mobile's Site as well as AT&T's site both indicate limited availability for the iPhone 6s Plus, regardless of storage capacity and color. AT&T's site is stating between October 13th and October 30th for all iPhone 6s Plus models.