Ive got an app that is not adapted to the iPad but will run on it just fine. I just finished updating the project to SDK 4, including an iAd etc. But since this update would not run on the iPad, replacing the existing one will reduce my customer-base. Im guessing most people who dont intend on making a hd-version for iPad have the same dilemma, so what have you done? Have you gone ahead and updated your app, hoping that the iOS 4 will soon hit the iPad and it will work there? Or have you uploaded a duplicate of you app, now distributing two apps?