A noob-ish question: I had Street Fighter 4 Arcade Edition, but all of a sudden it changed to the Ultra edition in my client. Was Capcom gifting the Ultra edition to owners of Arcade? Doesn't seem like it, which makes me think that the "Ultra" name on my version of SF is a stand-in until I actually upgrade to Ultra, or something. So can anyone explain what's going on here please?
You are correct. You have to purchase the upgrade.