Sixth OS X El Capitan Beta Includes More Hints to 4K 21.5-Inch Retina iMac
Apple's sixth OS X 10.11 El Capitan beta, released on Monday, includes a few lines of code that yet again reference the possibility of a forthcoming 4K 21.5-inch Retina iMac, as discovered by Consomac [Google Translate]. A similar occurance happened back in June, when some code in the second OS X El Capitan beta referenced a 4K 21.5-inch iMac screen, but, as yet, Apple hasn't given any word on the veracity of the rumors.
Consomac's research into the code of the new OS X beta found three new files, two of which include screen resolutions that hint at the possible arrival of new 5K 27-inch iMacs, and the other with a 4096×2304 resolution. Like the second El Capitan beta, this code could potentially refer to a 21.5-inch Retina iMac display with 4K resolution coming down the line. Although, as Consomac discovered, an image accompanying the three files points to a design that will largely "remain unchanged" for the new line-up.

Beginning last October, Apple launched a few updates for the 27-inch iMac with Retina Display, but the rest of the iMac line-up hasn't seen a proper upgrade since September 2013. The major reasoning behind the stalled upgrade cycle is the company waiting for Intel's various desktop components -- including the Broadwell and Skylake processors -- to be available for a more substantial update to Apple's smaller-sized desktop computer line-up.
An update to the 21.5-inch iMac line has been hinted at for a while now, including a rumor just yesterday from KGI Securities analyst Ming-Chi Kuo that pointed to the iMac line gaining a significant boost this quarter. Kuo points to display improvements with greater color saturation thanks to a few new processors, but never references directly the arrival of a retina display for the 21.5-inch iMac line. Still, the timing with back-to-school shopping swinging into gear, and the lengthy update cycle of the 21.5-inch line-up, definitely suggests an impending update for the model sometime soon.
Popular Stories
Apple turns 50 this year, and its CEO Tim Cook has promised to celebrate the milestone. The big day falls on April 1, 2026.
"I've been unusually reflective lately about Apple because we have been working on what do we do to mark this moment," Cook told employees today, according to Bloomberg's Mark Gurman. "When you really stop and pause and think about the last 50 years, it makes your heart ...
Apple plans to announce the iPhone 17e on Thursday, February 19, according to Macwelt, the German equivalent of Macworld.
The report, citing industry sources, is available in English on Macworld.
Apple announced the iPhone 16e on Wednesday, February 19 last year, so the iPhone 17e would be unveiled exactly one year later if this rumor is accurate. It is quite uncommon for Apple to unveil...
In the iOS 26.4 update that's coming this spring, Apple will introduce a new version of Siri that's going to overhaul how we interact with the personal assistant and what it's able to do.
The iOS 26.4 version of Siri won't work like ChatGPT or Claude, but it will rely on large language models (LLMs) and has been updated from the ground up.
Upgraded Architecture
The next-generation...
While the iOS 26.3 Release Candidate is now available ahead of a public release, the first iOS 26.4 beta is likely still at least a week away. Following beta testing, iOS 26.4 will likely be released to the general public in March or April.
Below, we have recapped known or rumored iOS 26.3 and iOS 26.4 features so far.
iOS 26.3
iPhone to Android Transfer Tool
iOS 26.3 makes it easier...
The iPhone 18 Pro Max will feature a bigger battery for continued best-in-class battery life, according to a known Weibo leaker.
Citing supply chain information, the Weibo user known as "Digital Chat Station" said that the iPhone 18 Pro Max will have a battery capacity of 5,100 to 5,200 mAh. Combined with the efficiency improvements of the A20 Pro chip, made with TSMC's 2nm process, the...