There has been a fairly major change in Apple's App Store policies, writes 9to5Mac. Looking ahead, it will not be possible to change the apps descriptions, but that Apple will approve them again.
Why Apple chose to do this is unclear, but it means that a single typo can delay an application to be launched on the App Store. However, Apple has become much faster by letting in new software and usually solve it in 24 hours.
What this means in the long run is hard to predict, but expect to queue for approval will be completed by developers with typos and text corrections, rather than apps that fundamentally changed.