While testing the upcoming OS X El Capitan beta version, developers and experts noticed some hints about future Apple products. The company is believed to present the new 21.5 inch iMac 2015 model this fall. When exactly could we expect the upgrade? You know that this week is very special to all ‘fruit’ device fans. Apple will announce new gadgets and software updates that will follow in September and October. Will the company talk about its next iMac version? It might mention the 21.5-inch iMac since Apple iMac 2015 release date is believed to take place in October or November. September will be devoted to iPhone 6s and 6s Plus lineup. According to rumors and suggestions provided by the beta OS X code, the Cupertino-based giant could offer the iMac with 4K display. This release could go alongside the final presentation of El Capitan platform that is expected in late October. The company and developers are still testing OS X 10.11 which should remind of Yosemite operating system but get improvements and new features that are not present in previous OS X. Some sources think that new iMac model with the 4K 21.5-inch screen should be announced in October and shipped in November. This could be a great step in time for 2015 holiday season as this is the time when customers are eager to purchase popular gadgets and famous products. For example, the iPhone is always a popular Christmas gift in the U.S. and its release in the fall gives Apple more chances to sell millions of handsets during the holidays. Would you like to get the iMac with a better display? This could be a good upgrade and a better purchase than the standard iMac.