This data is from approximately 6:50PM Central Time on 09/27/2015. There have been some changes to availability from last night's post.

T-Mobile has seen the biggest changes, along with a couple of changes for Verizon.

T-Mobile

• 64GB Gold iPhone 6s slipped from available to 7-10 days
• 64GB Rose Gold iPhone 6s slipped two weeks to 6-8 weeks
• 16GB Space Gray iPhone 6s Plus slipped two weeks to 4-6 weeks
• 16GB Gold iPhone 6s Plus slipped two weeks to 4-6 weeks
• 64GB Space Gray iPhone 6s Plus slipped two weeks to 2-4 weeks
• 64GB Silver iPhone 6s Plus slipped two weeks to 2-4 weeks
• 64GB Space Gray iPhone 6s Plus slipped two weeks to 2-4 weeks
• 128GB Gold iPhone 6s Plus slipped two weeks to 6-8 weeks
• 128GB Rose Gold iPhone 6s Plus slipped two weeks to 6-8 weeks

Verizon

• 16GB Silver iPhone 6s Plus slipped two weeks to 10/19
• 128GB Rose Gold iPhone 6s Plus slipped two weeks to 11/2

Millions of individuals have now received their new iPhone 6s and iPhone 6s Plus devices. There are some that may have, like myself, enabled Two-Factor authentication with Apple. If they are upgrading their iOS device, it would be a good time to add that new device as a trusted device. I thought I would provide a step-by-step tutorial on how to accomplish this.

• Enable Find My iPhone on your device.
• Open Safari
• Go to https://appleid.apple.com
• Click on "Manage Your Apple ID".

• Enter in your Apple ID and Password.
• Click on "Sign In".
• Select a device to authenticate your login.

• Click on Next.
• Wait for one-time code to be sent.
• Enter in the digits from the one-time passcode.

• Click on "Verify".
• Click on "Passwords and Security" on the left.

• Under "Manage your trusted devices", click on "Add or Remove Trusted Devices".
• Locate the Device that needs to be added.

• Click on "Verify" next to the device that you want to add.
• Wait for the one-time code to be sent.
• Enter in the verification code that was sent to your new device.

• Click Verify.

It is that simple to add a device to your trusted devices for two-factor authentication for Apple.

This data is from approximately 7:00PM Central Time on 09/26/2015. There have been some changes to availability from last night's post.

There has not been much change from last night.

Sprint

• 16GB Gold iPhone 6s Plus slipped a week to 4-5 weeks
• 128GB Rose Gold iPhone 6s Plus slipped two weeks to 4-5 weeks

T-Mobile

• 16GB Silver iPhone 6s Plus slipped 2 weeks to 4-6 weeks
• 16GB Rose Gold iPhone 6s Plus now 6-8 weeks instead of "Early November" (Effectively the same)
• 64GB Rose Gold iPhone 6s Plus now 6-8 weeks instead of "Early November" (Effectively the same)
• 64GB Gold iPhone 6s Plus slipped 2 weeks to 4-6 weeks

It has been approximately 10 hours since Apple and other retailers began selling the iPhone 6s and iPhone 6s Plus.

This data is from approximately 5:50PM Central Time on 09/25/2015. There have been some changes to availability from last night's post.

As a note, from this point forward any item that has a "regular" ship date or is considered to be "In Stock" will not have a date associated. However, it will still have the color for the corresponding color. As an example, the AT&T and Sprint iPhone 6s models that will ship next week are considered "In Stock".

T-Mobile

• 16GB iPhone 6s Gold now shipping 2-4 weeks, from being "In Stock"
• 16GB iPhone 6s Silver now shipping 2-4 weeks, from being "In Stock"
• 16GB iPhone 6s Rose Gold slipped 2 weeks to 4-6 weeks
• 64GB iPhone 6s Rose Gold slipped 2 weeks to 4-6 weeks
• 16GB iPhone 6s Plus Silver slipped from "In Stock" to 2-4 weeks
• 16GB iPhone 6s Plus Gold slipped from "In Stock" to 2-4 weeks
• 16GB iPhone 6s Plus Space Gray slipped from "In Stock" to 2-4 weeks
• 128GB iPhone 6s Plus Gold has slipped from "In Stock" to 4-6 weeks
• 128GB iPhone 6s Plus Rose Gold has slipped from 2-4 weeks to 4-6 weeks
• 128GB iPhone 6s Plus Silver has slipped from 2-4 weeks to 4-6 weeks

Verizon

• All iPhones on Verizon have improved by 2 days. This is likely of a better estimate for shipping.

I'm glad I ordered an iPhone 6s Plus.

This is via John Gruber at daringfireball.net.

This data is from approximately 5:50PM Central Time on 09/24/2015. There have been some changes to availability from last night's post.

As a note, from this point forward any item that has a "regular" ship date or is considered to be "In Stock" will not have a date associated. However, it will still have the color for the corresponding color. As an example, the AT&T and Sprint iPhone 6s models that will ship next week are considered "In Stock".

As expected, AT&T's stock is the most volatile.

T-mobile

• iPhone 6s 64GB Rose Gold is now available.
• iPhone 6s 16GB Rose Gold slipped to 2 to 4 weeks.

AT&T

• iPhone 6s 64GB Rose Gold improved 1 week to 4 to 5 weeks.
• iPhone 6s Plus 16GB Space Gray improved 1 week to 5 to 6 weeks.

This data is from approximately 7:00PM Central Time on 09/23/2015. There have been some changes to availability from last night's post.

As a note, from this point forward any item that has a "regular" ship date or is considered to be "In Stock" will not have a date associated. However, it will still have the color for the corresponding color. As an example, the AT&T and Sprint iPhone 6s models that will ship next week are considered "In Stock".

As expected, AT&T's stock is the most volatile.

AT&T

• Rose Gold 16GB iPhone 6s improved 1 week to 2-3 weeks.
• Rose Gold 64GB iPhone 6s improved 1 week to 5-6 weeks.
• Rose Gold 128GB iPhone 6s improved 1 week to 1-2 weeks.
• Space Gray 16GB iPhone 6s Plus slipped 1 week to 6-7 weeks.

This data is from approximately 7:40PM Central Time on 09/22/2015. There have been some changes to availability from this morning's post.

The other changes have only occurred to the Carriers.

AT&T

• 16GB Space Gray iPhone 6s Plus slipped 1 week to 5 to 6 weeks.
• 64GB Space Gray iPhone 6s Plus improved to 4 to 5 weeks.
• 16GB Rose Gold iPhone 6s Plus slipped 1 week to 6 to 7 weeks.
• 64GB Rose Gold iPhone 6s Plus slipped 1 week to 7 to 8 weeks.
• 128GB Rose Gold iPhone 6s Plus slipped 1 week to 7 to 8 weeks.

Verizon

• 16GB Rose Gold iPhone 6s slipped to 10/21.

Sprint

• 16GB Rose Gold iPhone 6s is now 2 to 3 weeks.
• All non-16GB iPhone 6s models are "In stock" (2-5 days).
• 16GB Silver iPhone 6s Plus slipped to 3 to 4 weeks.
• 16GB Gold iPhone 6s Plus slipped to 3 to 4 weeks.
• 16GB Space Gray iPhone 6s Plus slipped to 3 to 4 weeks.
• 64GB Space Gray iPhone 6s Plus is "In Stock" (2-5 days).

This data is from approximately 5:50AM Central Time on 09/22/2015. There have been some changes to availability from last night's post.

The other changes have only occurred to AT&T.

T-Mobile

• Rose gold iPhone 6s 16GB and 64GB are now 10 to 14 days.
• Space Gray iPhone 6s Plus 16GB, 64GB, and 128GB are now available for Launch day.
• Silver iPhone 6s Plus 64GB is now available for launch day.

AT&T

• 64GB iPhone 6s Plus Space Gray slipped a week to 5 to 6 weeks.

This data is from approximately 6:45PM Central Time on 09/21/2015. There have been some changes to availability from last night's post.

Apple

• ALL Models of the iPhone 6s are now at 1-2 weeks shipping. This means that all remaining stock will likely go to existing orders or to supply Apple's own stores for launch day.

The other changes have only occurred to AT&T. It appears as though the potential inventory for AT&T is quite volatile.

AT&T

• iPhone 6s Rose Gold 16GB slipped a week to 3 to 4 weeks.
• iPhone 6s Rose Gold 64GB slipped to 6 to 7 weeks.
• iPhone 6s Plus 16 Silver slipped a week to 6 to 7 weeks.
• iPhone 6s Plus 64GB Silver slipped a week to 4 to 5 weeks.
• iPhone 6s Plus 128GB Silver slipped a week to 5 to 6 weeks.
• iPhone 6s Plus 16GB Gold slipped a week to 5 to 6 weeks.
• iPhone 6s Plus 64GB Gold slipped a week to 4 to 5 weeks.
• iPhone 6s Plus 128GB Silver slipped a week to 4 to 5 weeks.
• iPhone 6s Plus 64GB Space Gray slipped a week to 4 to 5 weeks.
• iPhone 6s Plus 128GB Space Gray slipped a week to 5 to 6 weeks.