Apple Reportedly Developing 24-inch OLED iMac — 600 nits

• Apple is reportedly working on a 24-inch iMac with an OLED display.
• The panel spec in discussion includes 600 nits of brightness and 218 PPI.
• Apple has requested information from Samsung Display and LG Display; development could finish by 2027–2028.

What the report says

South Korea’s The Elec says Apple has sent requests for information to Samsung Display and LG Display about a 24-inch OLED panel for the iMac. The company is said to be targeting a development completion window of 2027 or 2028, with a retail launch possibly coming later.

Key specs being discussed

The panel details reportedly include 600 nits of peak brightness and a pixel density of 218 PPI, matching the current 24-inch iMac’s 4.5K Retina resolution but offering around a 20% boost over the existing 500-nit LCD.

If realized, the OLED iMac would hit brightness comparable to Apple’s Studio Display while adding OLED benefits such as deeper blacks, higher contrast, and improved power efficiency.

Which suppliers and technologies are involved

Apple has engaged both Samsung Display and LG Display. Sources say each vendor would propose different large-format OLED approaches rather than Apple’s preferred RGB OLED.

Samsung would likely offer QD-OLED (quantum dot OLED), while LG would pitch W-OLED (white OLED) solutions. Both companies reportedly are working on 5-stack configurations—adding an extra green layer—to push brightness beyond current 4-stack designs.

RGB OLED remains Apple’s preference

Internally, Apple reportedly favors RGB OLED, where color is produced at the subpixel level. However, RGB OLED hasn’t reliably scaled to the 20–30 inch sizes needed for desktop all-in-ones, so Samsung and LG are proposing alternatives for the near term.

How this fits with Apple’s display roadmap

Apple is already moving toward OLED for Mac—future 14-inch and 16-inch MacBook Pro models are expected to use Samsung’s IT OLED lines, and OLED MacBook Air variants are anticipated later.

This appears to be the first credible report linking OLED to Apple’s all-in-one iMac lineup. A separate rumor about a high-end iMac with an M5 Max chip does not explicitly tie that model to OLED panels.

Why it matters

An OLED 24-inch iMac would bring stronger contrast, better black levels, and possibly better battery/thermal behavior for integrated systems. For creators and general users, 600 nits and OLED contrast would be a meaningful upgrade over today’s 4.5K Retina LCD.

Apple’s timeline suggests we may see development progress through 2027, but a formal product release could arrive later.