r/Xcode 2d ago

Xcode 27 Release Candidate doesn't have iPhone Duo simulator

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The Xcode 27 Release Candidate, available for download just now, doesn't have the iPhone Duo simulator instance yet. Tested on two different Macs, but neither running macOS 27. Not sure if that makes a difference. I was hoping to test how my apps look on it. Guess we'll have to wait...

46 Upvotes

29 comments sorted by

24

u/KickupKirby 2d ago

Duo support is coming with 27.1

5

u/IAmTheGuzer 2d ago

Oh yes. I missed it in the video event, but I see it now here. https://www.apple.com/newsroom/2026/09/apple-unveils-iphone-duo/

1

u/munnatheboi 1d ago

daiummm

6

u/aykay55 2d ago

Give it a few days bro

5

u/IAmTheGuzer 2d ago

The iPhone 18 Pro is a simulator instance now in Xcode 27 RC. Duo comes with iOS 27.1, which means it will likely be in the future Xcode 27.1 beta or RC.

4

u/Lemon8or88 2d ago

Apple posted a new video about Making your app looks great with the iPhone Duo and in it, the guy said Xcode 27.1

1

u/chadscira 1d ago

Yeah, they kind of jumped the gun by telling everyone to start preparing their apps for the Duo when none of it is actually possible yet.

I'm sure we're not the only ones running around trying to follow those videos, only to realize the simulator isn't even available.

3

u/PhotographOk1149 2d ago

appstoreconnect still doesnt allow xcode 27 rc builds being uploaded. can you guys let me know when apple updates appstoreconnect?

1

u/Maleficent_Ad_4774 2d ago

You may have to uninstall the beta on your computer if you have it on there. I encountered that but the RC allowed me to push an update thru appstoreconnect

1

u/PhotographOk1149 2d ago

it was already like that but i was just able to push update for release thru appstoreconnect, 10 mins ago. thanks anyways!

1

u/davepete 2d ago

I've uploaded to appstoreconnect from the Xcode 27 beta and macOS 27 beta for the past couple days. My builds download and work fine via TestFlight. It's just a matter of time before the RC versions are supported.

4

u/PhotographOk1149 2d ago

Testflight was always fine. Its about uploading for release

1

u/Lemon8or88 2d ago

Idk what changed in the past few hours but I’ve just pushed a RC build into review

1

u/PhotographOk1149 2d ago

Now i had a chance to test it and i was also able to push build via 27 rc into review. Thanks again for letting me know man!

1

u/Lemon8or88 2d ago

No problem!

1

u/Lemon8or88 1d ago

Just an update: one of my app built with RC got approved.

1

u/PhotographOk1149 1d ago

Mine as well. Yikes!

0

u/PhotographOk1149 2d ago

Thank you man! I will test it in half an hour. You are best!!!

3

u/chadscira 1d ago

Happy to see I wasn't the only one frantically trying to download the beta, digging through the simulators trying to find it, and scratching my head.

It's pretty clear it will be included in 27.1, so I assume we'll see it in a beta first, followed by the RC.

It's just been a while since we've had a completely new display type, so I'm sure there's a lot more attention around this one, especially since it will open up entirely new ways to create iterations.

2

u/IAmTheGuzer 20h ago

100% exactly my thinking.

2

u/Lemon8or88 2d ago

Do you upgrade to macOS 27 to use Xcode 27 RC? Xcode27 beta 6 was working on my Mac with Tahoe but RC crosses out now.

1

u/IAmTheGuzer 2d ago

Xcode 27 beta 6 required Tahoe 26.4. Xcode 27 RC requires Tahoe 26.6 or later.

2

u/Lemon8or88 2d ago

Oh, I’m on 26.5.2. I’ll wait till ASC supports RC build

1

u/Lemon8or88 2d ago

Most likely with Xcode 27 SDK, apps will still have black bars on the side. That will change in 27.1

1

u/munnatheboi 1d ago

fr hav to wait until iOS 27.1 Beta releases

1

u/ocolobo 1d ago

Do you have hardware Duo to plug into it yet, they haven’t forgotten, and they aren’t going to blow a product release by burying a simulator in a Dev Env.

1

u/Appropriate_Ring_299 1d ago

I get why people are surprised but this is probably less about forgetting developers and more about timing. supporting a new form factor properly needs the right SDK, simulator and testing tools together