0087215, I got into the same situation. I wanted to give my brother a MB as a birthday present. It was, however, heavily rumored that a new MB will come out soon. Of course I did not want to give him soon-to-be old MB and disappoint him when the new one came out. So, I made a coupon (with my terrible drawing of a MB) that said I will exchange the coupon with a new MB when it came out. I put it into an envelope and gave it to him. It took a month until it was actually announced but how eager and excited he was during that time!