After many phone calls ended in frustration, I finally went into a VZW store and preordered the GS3 to preserve the unlimited data on my line. It was apparently too complicated for the phone reps to figure out. When the share everything plans were released I knew I had the upgrade on the one line on my account so I called multiple times to see what I could do to use that and preserve my unlimited data. I of course got different answers every time from 'no you can't use that upgrade period', to 'yes you can use the upgrade on your line', and even had one who didn't know what the galaxy s3 was! My favorite today, 'I'm sorry but you're not allowed to keep unlimited data plans anymore even if you upgrade now.' In the store they were very quick to tell me I could do what I wanted and sealed the deal right there. While verizon still sucks, the unlimited data is mine for the time being, and they can suck on their shared and tiered data plans. Can't wait for my "Pebble Blue" 16GB S3 
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