Apple has updated its flagship MacBook Pro with Retina Display by including a faster processor, more memory and a free update to OS X Yosemite, which will be available for a starting price of $1,299.

The 13-inch MacBook with Retina Display now features Intel core i5 processor up to 2.8 GHz with Turbo Boost that speeds up to 3.3GHz, along with 8GB of memory, which is an upgrade from the previous 4GB memory.

Users can also customise the system, which starts at $1,299 with a faster Intel Core i7 processor.

The 15-inch MacBook Pro with Retina Display will be offered with Intel Core i7 processor with 16GB of memory, an upgrade from its present 8GB memory.

It has also got Turbo Boost speeds up to 3.7 GHz, which can be upgraded to 2.8 GHz with Turbo Boost speeds up to 4.0 GHz.

The company is also offering the iLife and iWork for free with the new Mac.

OS X Mavericks will also be offered for free, allowing users to upgrade to OS X Yosemite in October.