That is typical Apple:
https://developer.apple.com/news/index.php?id=12172013a
Im do confirm xcode 5 works pretty nice with glbasic v12 and it got accepted Greedy Mouse twice and no imporant issues have been seen (other than pretty minor issues). Howover its does need to updatet to uses iOS 7 icon size, which glbasic not does, but can been configered in xcode. Also all arm6 code need to been removed, which is not used since iOS 4.3
The most annoying about xcode, is the requirements of Mountian Lion on that one.....
XCode 5 and iOS 7:
- You can't compile for iOS 6.
- You can't support older devices like iPad 1.
- You must to generate a lot of new icon sizes.
- You must to upgrade to Mavericks or Mountain Lion.
- You must to buy a new Mac with a lot of memory for XCode 5.
Bad news for developers.
You can still support iOS v4.3 as minimum requirement, but you need support ios7.
Etc my game do run nice on my iPad 1 with newest Xcode. The game do require os5 as minimum due inapp purchase.
Also Xcode 5 can run on mountain lion, not just mavericks.
They did the same for ios6 upgrade, so no surprise.
It's good to know this.
Then, they only accept apps compiled with the last (or current) SDK?
It's must been compiled with newest Xcode, yes, and must match ios7 design and iphone5 screen.
But you do can still supports 3GS and ipad1 as olders devices for compatible (arm 7). Devices with arm6 have not been supported in a while.
Also on android I'm removed v2.2 support in android extras.
Ps. My mac have 2gb ram and have upgraded OSX twice.