Kasper Jade reports for AppleInsider that Apple has issued an advisory to retail stores stating that all existing iMac and Mac mini SKUs will be discontinued.

There have been several rumors in the past few months indicating that the iMac would be refreshed but this latest report all but confirms it. A couple of AppleInsider reports that I had written about previously rumored “compelling new features,” price cuts, and an “industrial design overhaul” for the iMac.

Last week Kasper Jade also reported that the new iMac designs are already being manufactured, and have been so for a couple of weeks. In the AppleInsider report Jade also writes that the upcoming iMac will “take design cues from the Cupertino-based company’s relatively new LED-lit Cinema Display offerings.”

Meanwhile Mac4Ever (Google Translated) has received a number of tips that suggest the inclusion of an SD card slot, the use of quad-core processors, and the possibility of Xeon processors. Although the inclusion of an SD card slot seems logical, I would suggest taking Mac4Ever’s rumors with grain of salt, they don’t exactly have the most fantastic track record in terms of breaking news about new macs.

Because of the stock constraints, the new iMac and Mac mini models will likely be released sometime in October.

Previously:
8/8/09: Upcoming iMacs to Release with ‘Compelling New Features’
6/30/09: Cheaper iMacs May Be Coming This Fall

Update 9/30/09: Some further indications that the Mac mini and iMac will be seeing a refresh, possibly before October 9:

• The shipping window for the low-end Mac mini has changed from the usual “Within 24hrs” to “1-3 business days.”
• TUAW has received a tip from an Apple Store employee claiming that his store only has 4 iMacs in stock.
• Another TUAW tipster ordered a Mac mini on September 18 and today received an email saying that the machine wouldn’t ship until October 9.

Update 10/3/09: Kasper Jade, of AppleInsider, Believes that Apple will announce updated MacBooks alongside the new iMac and Mac mini.

Meanwhile Sam Oliver is reporting that shipping times for the MacBook, Mac mini, and iMac been changed on the online Apple Store for Resellers. The wait times for these macs are much longer than the “1-3 business days” that usually appears on the Apple Store for Resellers.

Update 10/3/09: AppleInsider | Apple ads hint at thinner iMacs, lighter MacBooks, cheaper Mac minis

Update 10/20/09: Mac mini with OS X Server and Multi-Touch Trackpad for Desktop Macs

Update 10/20/09: Apple Updates MacBook with LED-Backlight, Glass Trackpad, 7 Hour Battery

Update 10/20/09: Apple Unveils New iMac with 21.5 and 27-inch 16:9 Displays

Update 10/20/09: Apple Updates Mac mini, Offers Server Model