SwiftUI List performance

Is the Tetherless Wi-Fi feature available in the preview of watchOS 2?I can't find any documentation that shows where this new feature is located or if its available.It is listed on the preview page here under Watch Connectivity:https://developer.apple.com/watchos/pre-release/

On my iPhone it says I performed a backup earlier today. Two actually, one is the normal size I would expect and the other is 0KB. I cannot delete either backup from the phone or the iCloud windows program. When I plug my phone into Itunes the latest iCloud backup it recognizes is the one I did a few minutes before I put iOS 9 on my phone. Is anyone else having problems running iCloud backups on iOS 9?

This line of code I could not get to compile in S2 (yes it worked in 1.2):let newerDate = calendar.dateByAddingUnit(NSCalendarUnit.Day, value: 1, toDate: NSDate(), options: nil)The error message:Cannot invoke 'dateByAddingUnit' with an argument list of type '(NSCalendarUnit, value: Int, toDate: NSDate, options: nil)'Must be a bug.

I didn't see anything obious so far except for possibly multitasking, which I am going to ask if it is/has usable background modes, is there any new background modes in iOS9, you know the kind, the kind that our users are begging us for? it always amazes me the answer to someone here asking if they can do something in the background,and the answer is that this does not fit into Apple's plan for the battery. yet the task asked about, would take far less battery than the current background modes, or even the task itself by having to do it in the foreground using the display. for instance doing a specific task that lasts less than 10 seconds at a specific date and time in the future, which uses about 1/1000th the battery of even major change to location in the background ...right now I have to ask the user to spend 10's of times the amount of battery than they have to, to execute tasks, because I am forced to have the user use the display to do it, rather than to do a specific task at a specific time in the futu

I downloaded watch OS 2 and now get the error when I click on mail : waiting for messages to be transferred from your iPhone : I keep getting the error . Any suggestions how to fix it?Moreover, my watchOS no longer connects to the contacts list to retrieve names in the database. The text messages are also not retrievable on iwatch.

I have a shared album iCloudSharedAlbum using iCloud1. How do I get comments attached to a photo?2. How do I get the recently added comment on a photo I am observing? (Using PHPhotoLibraryChangeObserver protocol)I have been trying with the official sample: https://developer.apple.com/library/ios/samplecode/UsingPhotosFramework/Introduction/Intro.htmlI just changed a couple of lines to show shared albums (In AAPLRootListViewController awakeFromNib method)PHFetchResult *smartAlbums = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeAlbum subtype:PHAssetCollectionSubtypeAlbumCloudShared options:nil];I add a comment to the shared photo and wait for the changes to be reflected in the sample app.-[AAPLAssetGridViewController photoLibraryDidChange:] it IS called!. However changes are nil // self.assetsFetchResults is a list of photos I am showing. // There is only one photo in the list, the one being shared and the one the comment was just added PHFetchResultChangeDetails *coll