I just sent version 2.3.0 of the Skritter iOS app in for Apple review. It'll probably take longer than usual because millions of apps are being submitted for iOS 7 this week. iOS 7 comes out on September 18, but the app update will come out later.
With 2.3.0, we're going from requiring iOS 5.1 to requiring iOS 7.0. This means that iPad 1, iPhone 3GS, and iPod touch 4th gen will no longer be able to download Skritter from the App Store. So if you're thinking of using one of those devices to Skritter, or keeping any of your devices on iOS 5 or 6, then you'll want to make sure you have the current app version now, since you won't be able to download it in a week or two.
Why increment the minimum version? iOS 7 has a bunch of new UI stuff that makes it hard to keep backwards compatibility. We're not using most of it, but we're using a little bit--and we're also using the new background fetch mode, which should hopefully let Skritter sync with your iOS devices while they're just sitting there, so you don't have to worry about, say, your iPad not having the reviews you did yesterday on your iPhone when you pull it out on the subway.
Other than that, the update is mostly a bugfix update. More details to follow in the newsletter on Sunday.