The redesigned iMac is said to be considerably thinner than the current form factor, with the machine's thickness almost impossible to gauge when viewed from the side. The curved rear shell is also said to appear more like a water droplet than the squared-off design seen in the current model. The report also claims that the new iMac's screen is glued to the front glass of the machine, in line with previous rumors stating that Apple is moving to fully laminate the two components together for improved display quality.
Also in line with previous rumors, the report suggests that Apple may first update the 21.5-inch model with the new design, which is said to maintain the existing "chin" below the display even as the body is tweaked with a thinner profile. The updated 27-inch model could then follow somewhat later, as has been suggested due to the challenges of laminating the larger display and glass with acceptable yields. The new iMacs are also said to be more expensive than the current models, but it is unclear how significant any pricing changes would be.
The report also says that Apple will indeed release a 13-inch Retina Display MacBook Pro which is already being assembled in Mexico and other locations with Chinese production scheduled for later this month. It's said to carry the code name of D1 which matches with the D2 code name for the 15-inch Retina Display MacBook Pro.
It's possible that Apple could unveil its new MacBook and iMac update at the iPad mini event which is expected on October 23rd.