Apple has refreshed its MacBook Pro line-up, just in time for the new operating system, OS X Yosemite, to get a rigorous test by a million beta downloaders.

The refresh updates the processors and RAM on the 13″ and the 15″ MacBook Pros (retina). Here’s what has changed and all the other details you might want to know if you’re looking to buy a new MBP this year.

13 Inch and 15 Inch MacBook Pros Upgraded with More RAM and Better Processors

It’s mostly an upgrade for the processors and the RAM. Apple continuously does incremental upgrades to all its products and this time around, the MBP gets the treatment.

Here are the specs:

13-inch MacBook Pro Specs:

  • 2.6 /2.8 GHz dual-core Intel Core i5
  • 8 GB 1600MHz memory
  • 128/256/512 GB PCIe-based flash storage
  • Processor Turbo boost up to 3.1 / 3.3GHz
  • Intel Iris Graphics
  • Built-in battery (9 hrs)

15-inch MacBook Pro Specs:

  • 2.2 /2.5 GHz dual-core Intel Core i7
  • 16 GB 1600MHz memory
  • 256/512 GB PCIe-based flash storage
  • Processor Turbo boost up to 3.4 / 3.7 GHz
  • Intel Iris Pro Graphics (In the 512GB MBP, NVIDIA GeForce GT 750M with 2GB GDDR5 memory)
  • Built-in battery (8 hrs)

Price of 13 Inch and 15 Inch Mac Book Pro

The 13-inch MBPs cost $1299, $1499 and $1799 for the 128GB, 256GB and 512GB models respectively. The 15-inch comes in two: 256GB ($1999) and 512GB ($2499).

OS X Yosemite is scheduled to launch in late October, rumored to arrive a month after iOS 8’s public release. Currently, all of them are in public betas with OS X Yosemite just having been released to about a million beta testers on a first-come-first-served basis. iOS 8 betas are still developer-only.

The new MacBook Pros (all retina displays) are available for orders with shipment within the US currently showing 24 hours.

As is the usual case, you can upgrade the processor and flash storage on these MBPs to fit your need.