Apple has announced that the company’s all-new iMac will be available on Friday, Nov. 30. The 21.5-inch iMac will be available through Apple’s online and retail stores, and at select Apple Authorized Resellers. The 27-inch iMac will be available for order at the same time. However, this model won’t ship until December.

First announced at the iPad mini event in October, the new iMac is 5mm thin, which is 80 percent smaller than the previous generation.

As Brent Dirks first reported, the 27-inch version has a resolution of 2,560×1,440 while the 21.5-inch iMac has a 1,920×1.080 resolution.

Along with being thinner, the new iMac sheds up to 8 pounds of weight, which is very nice news. Users can have up to 32GB of memory and a 3TB hard drive or 768GB of flash memory.

A third storage option is the new Apple Fusion Drive built-in to Mac OS X Mountain Lion. It’s 128GB of flash storage combined with a 1 or 3TB hard drive. They are both fused together in one logical volume for faster read times.

The 21-inch iMac starts at $1,299, while the 27-inch model starts at $1,799.