If you take a look at last years model it has a 5-star rating and this one is even better. For 2015 Apple has added a newer SSD that's over double the speed of last years (which was already faster than standard).
They swapped out the trackpad for a brand new design called force touch that doesn't actually click but simulates a click with magnets. If you didn't know it you wouldn't be able to tell! It feels just like a click but with the benefit of being quieter and more consistent no matter where you press. It allows you to press harder to get a secondary click for more functions on OS X as well as track sensitivity.
Apple already had one of the best trackpads and this is a big jump in quality, hard to go back to 2014 after using this one. The last update is the new AMD GPU. This results in support for 5K displays, 1 extra hour of battery life, and from 20% to over 100% improvement in apps like Final Cut X which use OpenCL.
The raw power is similar between last years Nvidia GTX 750M (Apple lists 20% improvement). With programs that are still biased towards CUDA the 2014 model is slightly better with the Nvidia card but most software is being updated and OpenCL will be taking over in the near future. I took a good while and compared this 2015 version to last year's model with Nvidia graphics and wrote out a full article as well as YouTube video Testing multiple benchmarking programs as well as 1080P and 4K tests with and without effects.
Also included is stabilizer tests as well as a test where I have 4x 4k clips scaled into a 4K timeline, each clip has 2 Luts applied and film grain. This is a VERY CPU/GPU intensive test. There's too much information to pass on here but you can check that out just do a search for Max Yuryev 2014 VS 2015 Macbook Pro and you'll find the video, as well as a link to the full article in the video description.
The article also has resulted from the same tests run on my $[$]MacPro, $[$]5K retina iMac, and $1300 mackintosh for you to compare these MacBooks too. If you're looking for a laptop for video editing this thing will get the job done. I've used multiple high-end windows laptops (MSI,Alienware,etc) and this is the one to go for!
The 15.4" MacBook Pro Laptop Computer with Retina Display & Force Touch Trackpad from Apple is a powerful notebook computer with an innovative, ultrathin, ultraportable aluminum unibody design. It is loaded with advanced power management features and an integrated lithium polymer battery, which work together to provide up to 9 hours of wireless web browsing.
The widescreen, LED-backlit IPS screen has a glossy finish and a native resolution of 2880 x 1800. With 220 pixels per inch, this MacBook Pro has a pixel count of over 5 million. You'll be able to output to 2 external displays at up to 2560 x 1600 via Thunderbolt 2 (Mini DisplayPort). Any Mini DisplayPort-compatible display will plug in without the need for an adapter.
This MacBook Pro also adds an HDMI port so HDMI-compliant devices, particularly HDTVs, are now natively supported as well. Visuals are handled by integrated Intel Iris Pro graphics while graphics-intensive applications take advantage of the dedicated AMD Radeon R9 M370X graphics card with 2GB of GDDR5 discrete memory.
For More information visit : http://www.apple.com/macbook-pro/specs-retina/
