Drex...you're describing specific app functionality. This is strictly related to functionality based off of the touch wiz launcher. I could care less about a menu opening every time I remove the stylus. That would be annoying to me.
And I'm pretty sure the hover/preview thing would have to be coded into apps to work, so unless Samsung had a hand in the gmail app, I would doubt it works there. On the plus side, you'll probably see more apps having s-pen features as it catches on and devs can set their apps apart from others and provide more functionality.
Personally I'd love to see the ability to embed signatures in Docs to Go. I think now I have to save a doc as a pdf and then annotate the sig on the pdf and save.
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