
In something of a surprise move, Apple today announced the launch of updated iMacs based on Intel's Haswell processors, faster PCI Express-based flash storage options, and 802.11ac Wi-Fi.
New models include:"iMac continues to be the example that proves how beautiful, fast and fun a desktop computer can be," said Philip Schiller, Apple's senior vice president of Worldwide Marketing. "Inside its ultra-thin aluminum enclosure, the new iMac has the latest Intel processors, faster graphics, next generation 802.11ac Wi-Fi and faster PCIe flash storage."
21.5-inch
- $1299: 2.7 GHz quad-core i5 and Intel Iris Pro graphics
- $1499: 2.9 GHz quad-core Intel i5 and NVIDIA GeForce GT 750M with 1 GB video memory
27-inch
- $1799: 3.2 GHz quad-core Intel Core i5 and NVIDIA GeForce GT 755M with 1 GB video memory
- $1999: 3.4 GHz quad-core Intel Core i5 and NVIDIA GeForce GTX 775M with 2 GB video memory
All standard configurations come with 8 GB of RAM and a 1 TB traditional hard drive.

The new iMac is available today through Apple's online store with all standard configurations with the exception of the high-end 21.5-inch model showing availability of "within 24 hours". The high-end 21.5-inch model is currently showing a shipping estimate of 2-3 weeks.
Article Link: Apple Updates iMac with Haswell and Faster PCIe Flash Storage