You Can Now Download iOS Apps Up to 50MB Over 3G (or 4G)
Previously capped at 20MB over 3G, iOS app downloads up to 50MB
can now be downloaded over 3G (or 4G in the new iPad LTE) in iOS
5.1. It's a welcome increase as devs aren't no longer handcuffed
to a minuscule megabyte limit and have more freedom to do more
stuff (if they want to hit that 'instant download' range).  The
obvious reason for the increase is to not punish universal apps
that have to accomodate assets for the new iPad's Retina
Display. The apps are going to be ginormous, we already know
that, so kicking up the app size limit will keep devs happy
since users won't be warned to jump over to Wi-Fi to download
their app.  This is good news! It was always sorta silly to have
to hop onto Wi-Fi for a 22MB app. But still, users should
proceed with caution since data caps are a real and potentially
expensive thing now. Downloading multiple 50MB apps is a quick
way to hit your carrier's draconian data limit and lose money on
overages. Stick with Wi-Fi