Same here.
I already asked in the WWDC Lab, what happens with on-demand ressources, when a new version is submitted, only on demand ressources have been changed? Will I see an update, that does not download or install anything except the info.plist?
But xloser to your topic:
My Mac s my digital hub and I never download App Updates via WiFi, only if I do not have any other option and the update is important enough (like during the WWDC). I have 3 devices linked there, my iPhone, my newer iPad (V3) and an old original one (ignoring for now).
When I download the thinned updates in iTunes, what will happen?
Do I get 2 different build downloaded, one for iPhone one for iPad?
Do I get a app download, that is thinned to only the 2 devices - in that case not that much at all?
What happens, when I download a thinned App on my iPhone, sync it via iTunes and want to install it on my iPad? The thinned iPhone version won't work on the iPad. Do I need a download - will it be another file?
Last not least, imagine I get a third device, like a new iPad and I want to sync all Apps from the current iPad to the new one. I may have to download all the apps thinned for the new device, as the current ones won't perform that well on the new device?
App Thinning is a nice idea and a smart way to reduce storage consumption on the device, but it comes with complications and tons on unneccessary downloads ;-)