Well I tried it, I had some problems with my PPC 6700 the speaker was going out so I took it in to the Sprint store to see what they would give me. I got a brand new PPC 6700 in the box, it sure is shiny and new.
I was half hoping they would have to give me a Mogul and half scared that I wouldn't ever see my trusted friend again. I will most likely get me a Mogul at some point but I couldn't be happier that I got me a new PPC 6700 before they get completely sold out. If you are hoping for a free upgrade you need to wait a while before you try the trade in, and if you are like me and want to keep your PPC 6700 when you get your Mogul you better get to the Sprint store soon before the replacements run out.