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With the holiday season fast approaching, Apple is preparing for its next huge announcement. Apple is set to unveil new Retina iMac desktops, along with a full launch of OS X Yosemite at an event that’s to be held on Thursday, October 16, a report from Re/code indicates. New iPad announcements are expected to spearhead the event as well. Apple has a reputation of doing the unexpected and having huge releases throughout the year.

Retina iMac rumors compiled by 9 to 5 Mac don’t confirm what the unannounced computer’s display resolution will be precisely, but it could lie anywhere between 4,096 x 2,304, and 6,400 x 3,600. For what it’s worth, 4K resolution displays are rated at 3,840 x 2,160. Also, it’s worth noting that the recently revealed DisplayPost 1.3 standard supports 5K displays with resolutions up to 5,120 x 2,880. The updated iMacs are widely expected to receive new processors as well, and we wouldn’t be surprised if they were powered by Intel’s new fifth-generation Core M chips, which are without fans, permitting companies that use them to make thinner and lighter machines.

An upgrade that Digital Trends expects to see in these unannounced iMacs is a boost to the graphics cards. Right now, Apple’s iMac lineup features Nvidia’s 700M series of graphics chips across the board, despite the fact that Nvidia launched its 800M series graphics chips months ago. Plus, rumors indicate that Nvidia may launch 900M-series chips as soon as sometime this month. If that does occur, it wouldn’t be unreasonable to think that they could show up in new iMacs

The Apple Watch may not be available until early 2015, but Apple is still gearing up for what promises to be a busy holiday shopping season. According to John Paczkowski of Re/Code, Apple is planning to hold a special media event on Thursday, October 16 where the company is expected to unveil new upgrades to its iPad lineup and, rumor has it, a 27-inch Retina iMac. If the rumor mill is too believed, the 21.5-inch iMac model will, unfortunately, not be graced with the retina treatment. It’s also believed that Apple will finally add Touch ID functionality to the iPad.