So they are taking away one of their biggest selling points?
"Here's the new GS3, now with a smaller 4" screen. It now has no relevent advantage whatsoever over the iPhone 5"
I'd switch to google from apple but I like my devices supported for the length of my 2 year contract and not feel duped when a new phone drops 3 months after I get my upgrade
There's a decent market for Android users that don't like huge phones. I've come across a few people that said they liked the S3, but it was too big for them.
As far as getting an Android phone that will receive all of the latest updates, go with a Nexus device. The Nexus S that dropped Dec 2010 is still getting updates to this day.