Is 4K in our future?
At a Glance
Apple's Thunderbolt Display was last updated two years ago, but Apple display updates have been very hard to predict due to their erratic update cycle.
- 4K resolution of 4096 or 3840 x 2160 pixels
- Retina resolution of 5120 x 2880 pixels unlikely
- iMac-like redesign with tapered design and razor-thin edges
- Thunderbolt 2 and USB 3.0
What We Expect
Apple's Thunderbolt Display is two years old now, having been announced in July 2011 but not shipping until two months later. Apple display updates have always been very hard to predict due to their erratic update cycle, and while Apple's October 22 media event seemed like an opportune time for Apple to launch an upgraded standalone display, no such product surfaced.
At the extreme end of possibilities would be a true Retina Thunderbolt display, offering four times as many pixels as the current Apple Thunderbolt Display, coming in at 5120 x 2880 pixels. A display at this size would be able to offer the same amount of screen real estate as the current display but with a much sharper appearance, using the same technology as in the Retina MacBook Pro.
A more achievable goal would be "4K" resolution of either 4096 or 3840 x 2160 pixels. Apple has touted its upcoming Mac Pro as being able to drive three such displays simultaneously, leading to speculation that the company is planning to launch its own 4K display.
New 4K panels from AU Optronics and Dell's announcements of new 4K displays have also fueled speculation regarding Apple's plans. Apple offered a 32-inch 4K Sharp display in its European Online Stores for a short period of time, though the monitor has since been removed.
No Concrete Rumors
An announcement regarding a new higher-resolution display could come with the launch of the Mac Pro before the end of the year -- but this is almost entirely speculation. Ultimately, there are still no concrete rumors suggesting when Apple will update its displays.
Given the cost of such a high-resolution panel and the graphics requirements needed to drive displays based on them, it seems likely that Apple would continue to offer either the current Apple Thunderbolt Display or a redesigned version of it in order to offer a more reasonably priced product compatible with the MacBook Air and other Macs lacking the graphics capabilities to drive the number of pixels in an upgraded display.
In More Detail
Speculation regarding a Retina standalone display from Apple began to ramp up in May 2012 when it was reported by ABC News that the next-generation iMac would be adopting such a display. Apple's "Retina" display transitions have so far been focused on doubling the number of pixels in each direction from the corresponding non-Retina models, allowing for the same amount of screen real estate but with sharper content enabled by having four pixels contributing to one viewable "point" on the screen.
The only Mac to have received such a bump so far is the MacBook Pro, with the 15-inch model being the first to make the jump in moving from a 1440 x 900 display to a 2880 x 1800 Retina display. With the rumor of the iMac making the same move, the 21.5-inch model would jump from the current 1920 x 1080 resolution to 3840 x 2160 or "4K" resolution and the the 27-inch model moving from 2560 x 1440 to a monster 5120 x 2880 resolution. Given that the Apple Thunderbolt Display uses the same 2560 x 1440 display panel found in the 27-inch iMac, it seemed reasonable to think that Apple's display could make the jump to Retina resolution alongside or soon after the iMac.
Rumors of a Retina iMac did not, and in fact still have not, come to pass, with both late 2012 and September 2013 updates maintaining their non-Retina resolutions even with a new, thinner design debuting in the late 2012 models.
Apple briefly posted an OS X Mavericks wallpaper at 5120 x 2880 resolution following the introduction of the upcoming operating system at WWDC 2013 in June, renewing speculation about possible Retina iMacs and standalone displays, but the wallpaper was quickly removed and the September 2013 iMac update failed to bring Retina displays.
Graphics horsepower would appear to be a major limiting factor for the move to a true Retina display, particularly for the 27-inch iMac and thus Apple's standalone display. With a Retina display at that size carrying nearly 15 million pixels, many of Apple's Mac products would simply be unable to drive such a display at its full resolution, even with significant graphics upgrades.
Cost is naturally another issue, especially considering the iMac's positioning as Apple's primary consumer desktop. The company could, however, elect to pursue an interim strategy similar to that used for the MacBook Pro, maintaining non-Retina models at the traditional price points while offering Retina models at higher prices for those who are interested in the feature.
4K and Thunderbolt 2 for Mac Pro
At its Mac Pro sneak peek offered at WWDC 2013 in June, Apple touted that the new, radically redesigned Mac Pro will be able to drive up to three 4K displays simultaneously, drawing on the power of its standard dual AMD FirePro graphics processors. As a result, many observers have speculated that Apple may be planning to launch its own 4K display alongside the Mac Pro when it debuts later this year.
The traditional 4K "Ultra HD" resolution carries 3840 x 2160 pixels, the same 16:9 aspect ratio seen in Apple's iMac and Thunderbolt Display lines, and is in fact the exact resolution that would be expected for a Retina 21.5-inch iMac. But blowing that resolution up to a 27-inch display could offer some appealing options for screen real estate without needing to go to the full Retina resolution of 5120 x 2880. A 4K Ultra HD display carries 8.3 million pixels, or just over half what would be required for a full 27-inch Retina display. But with Apple targeting professional users with the new Mac Pro, the company may even look to push the resolution to the wider "Cinema 4K" standard of 4096 x 2160.
Apple's upcoming Mac Pro also will see the introduction of the new Thunderbolt 2 connectivity standard, offering up to 20 Gbps of data transfer in each direction. An upgraded Apple display could take advantage of that standard both for its own display needs and for its passthrough capabilities as a hub. USB 3.0 would also be an obvious upgrade for such a display.
Given that the maximum resolution supported by the DisplayPort 1.2 standard used in Thunderbolt 2 is Cinema 4K at 4096 x 2160 pixels, it seems extremely unlikely that Apple would create a dual Thunderbolt 2 solution for driving an even higher resolution Retina display at 5120 x 2880 pixels. As a result, some form of 4K resolution seems much more likely than a true Retina display at the 27-inch or larger size.
Apple's Thunderbolt Display and its predecessor Apple LED Cinema Display have taken design cues from the iMac over the years, with a similar body design and aluminum foot. With the iMac receiving a redesign at its late 2012 launch with a new design encompassing up to 40% less volume than the previous design and with thin edges tapering to just 5 mm thick, many have been waiting for the Apple Thunderbolt Display to adopt a similar design, reducing bulk and weight.
The redesigned iMac also features a new laminated display technology that brings the display closer to the cover glass for improved color and contrast, as well as an anti-reflective coating. Both features would be welcome additions to the Apple Thunderbolt Display as well.