I know this must have been asked so many times. But I am really confused. Now and as we are almost at the end of Sep I just purchased my first imac ever (coming from windows platform). Expecting to receive it within the coming few days. I purchased the 27 inch 3.5 GHz, 16 GB RAM, 3T Fusion drive, and the NVIDIA GTX 780M 4GB . It's a pricey setup topped the $3000 with taxes. Now I hear all these rumors of new update coming next month!!!! it's so annoying. Do not know what to do, should I return it and wait for the announcement in couple of weeks then wait for maybe another 3 month for the actual release??? Or should I enjoy what I just purchased and never look back? My concern is, with the maxed price I paid I am afraid that I might have the chance to get the 4K or 5K or whatever refresh they will offer. Any advice?