Count me in!
Just got the black EVO 4G at the beginning of February but taking very good care of it so it stays as "mint" as possible.
Initially, I considered waiting till next February to get the $75 1-yr upgrade discount on the EVO 3D, but I don't think it's worth wasting my "upgrade" for just that much.. Better let the current contract ride out and get my full $150 + MIR upgrade discounts in December 2012.
So my Plan-B is to sell it with some extras I bought (an HTC OEM leather sleeve I bought off Amazon, the Casemate "Barely There" case, and OEM white battery door, an HTC OEM Silicone Skin) for a decent amount ($300 - $350, maybe?), and shell out the remaining amount to buy an EVO 3D full price as soon as it comes out. Any thoughts on how much it will cost without subsidies?