The iMac will be upgraded to Broadwell when the chip releases.
The next generation iMac is likely to have a 27-inch Retina 5Kdisplay with 5120×2880 pixel resolution, which is almost double the resolution of the current iMac.
Citing a source close to Apple tech blogger Jack March wrote that the company is planning to launch the next generation iMac in its next press event.
The iMac might be powered by Intel i7-4790K Haswell processor that has base clock speed of 4.0GHz, and the company would replace the current Nvidia GPU with AMD graphics.
Apple is also expected to upgrade the processor of the 27-inch and the 21 inch iMac when Intel’s Broadwell chip releases.
The 21-inch iMac will not get the Retina display but will have resolution of 1920×1080 pixels.
The source also reported that the design of the next generation iMac would not change, but would not have the USB Type-C port.
Apple has offered retina display in iPhone 4, iPad 4, iPad Mini and MacBook Pro.
An iMac with higher resolution has been speculated since the release of OS X Yosemite developer preview, when Macbidouille found a code in the OS that hinted about higher resolution retina display.