Apple sent out an interesting email to developers today informing them of the need for high resolution screenshots for apps developed for the iPhone and iPod touch.
We would like to make you aware of the following:I don't know if this is just a reminder to those developers with older apps in the App Store that they need to upgrade their screenshots, or a hint that there is something else coming down the pipe that developers should be aware of.
Required iPhone & iPod touch Screenshot Upgrade for Retina Display
The requirements for high-resolution images are 960 x 640, 960 x 600, 640 x 960, or 640 x 920 pixels. Images must be at least 72 dpi, in the RGB color space, and the file must be .jpeg, .jpg, .tif, .tiff, or .png. You can update your screenshot files at any time in iTunes Connect.
New Notification for Binaries Exceeding Cellular Network Download Size Limit
Admin and Technical users will now be notified if your resulting binary size for the App Store exceeds the cellular network download size limit of 20MB. Exceeding the limit requires your app to be downloaded over Wi-Fi. This information can help you determine if you want to resubmit your binary in order to reduce the size of your app.
The App Store Team