It seems Apple has upped the over-the-air download limits from 10 to 20 MB, without noticing anyone. The screenshot, which originates from Italian website AllMobileWorld, proves the point.
However, the limits may have not been raised all around the world. One report from Denmark indicates that users in the country remain at a 10MB limit.
My thinking is that if this started happening in some parts of the world, it will soon be spread out across the markets Apple serves. In the meantime, the official documentation still shows 10MB limit…