Apple will accept only xcode5 and target ios7 build from this february

so no more ios6 or below
that s goin to be tough as ios7 eat more memory… lot of headeche ahead.

Where did you get that? You can still target iOS 6. There is nothing preventing that.

from apple dev portail
https://developer.apple.com/news/index.php?id=12172013a#top

not sure if i understand correct, optimise for ios 7 i understand exclusively target ios7…

I understand it as “test your apps on iOs7 and be sure it works well”. I think it would be a bit too much to leave all those who did not update to iOs7 behind

It doesn’t mean that you can only target iOS 7. That’s not what “optimize for” means at all. All it means is that the app has to run correctly on iOS 7.

–Eric