Well there's no change to the size of the screen, which still comes in at the whopping 5.7 inches that we have come to know and love, but Samsung has made some significant changes to that killer feature.
That 5.7-incher is now a Quad HD Super AMOLED (2,560 x 1,440 resolution) technology that stretches to 500 pixels per inch.
You can check out our hands on with the Samsung Galaxy Note 4 review for our first impressions of just what has changed in this latest generation.
What is it? Samsung's fourth gen phablet
When's it out? September 19 in the UK, September / October elsewhere
What will it cost? A lot, even more than the pricey Galaxy S5
Samsung Galaxy Note 4 release date and price
The Galaxy note was announced at IFA 2014 on September 3. Samsung had sent invites for an event advising people to 'Note the date', which was a bit of a give away, and so it proved.
Samsung has confirmed that the Galaxy Note 4 will be available in the UK from September 19. Initially it will just be sold in Samsung Experience stores, but from September 26 select retailers, such as Three and Carphone Warehouse will begin stocking it and the phone will go on general sale from October 10.
We're still waiting to hear an exact release date for the phone in other territories around the world, but a recent Samsung advert claims it will be available sometime in October. If you're in the UK then you can check out our release date guide for more detailed information on availability and pricing as we get it.
Speaking of price, there's been very little said about that yet, but a listing on Indonesian site erafone puts it at IDR 9,499,000 (or roughly £490 / $810 / AU$870) which seems believable, especially since those conversions don't include local taxes. Better start saving.
With the Galaxy Note 4 going on sale imminently we should have some more official prices soon.
An amazing screen - again
First up, screen size. The original Note came with a 5.3-incher, the Note 2 showed up with a 5.5-inch display and the Note 3 pushed things to 5.7 inches.
But actually Samsung showed admirable restraint, keeping the Note 4 to the 5.7 inches of its predecessor, but throwing a boat-load more quality into its killer feature.
The screen now boasts Quad HD Super AMOLED (2,560 x 1,440 resolution) technology that stretches to 500 pixels per inch.
Plus, Samsung is throwing in what it is calling an adaptive display - one that changes depending on the light of the place you are viewing the screen - and on paper you have the optimum viewing no matter what situation you are in.
It even decided to get fancy and launch a variant of the phone called the Samsung Galaxy Note Edge, which has a curved display that folds around the spine of the phone. Sadly this didn't make it to the main device, but it's a good test to see if there's desire for such innovation.
Samsung Galaxy Note 4 power and storage
The Galaxy Note 4 brings with it a pretty impressive 2.7GHz quad-core Qualcomm Snapdragon 805 processor, which certainly won't be struggling to keep things moving despite the screen.
Also worthy of, ahem, note, is the 3GB of RAM that the phone is running - there are still plenty of people with PCs that don't have that kind of memory.
The internal memory of the Galaxy Note 4 is a not insignificant 64GB, which should mean you don't have to choose between your collection of Jean Claude van Damme movies and your lovingly put-together eclectic music.
Of course, there's a microSD slot too, with the ability to add 128GB more if you're thinking of downloading the internet for a day.
Samsung Galaxy Note 4 camera
The Galaxy Note 4 came in for quite the camera upgrade, but not the 20MP sensor that a report from ET News suggested was due for release in the second half of the year.
Instead, it's gone from 13MP to 16MP but camera-philes will be more impressed with the Smart Optical Image Stabilisation, which helps keep every picture blur free and clear when you're snapping around.
If you hate the word selfie, look away now. The front-facing camera has followed the inexplicable trend and will allow you to take better self portraits, with a 3.7MP sensor with a f/1.9 aperture, allowing in a lot more light and mitigating the lack of flash.
The sensor can now make pictures look a lot more natural thanks to a 90-degree field of view – and the Note 4 has even stolen the panorama mode from the rear-facing camera to allow you to fit more people into your personal snap.
Oh, and you can tap the heart rate sensor on the back of the phone (more on that later) to take your pic to avoid shaking the camera. That's handy.
You can also use the rear camera in unison with the S Pen. A new feature called Snap Note allows you to take a picture of a piece of paper (or whiteboard) and change what's in the picture, which will apparently be excellent for when taking notes in a lecture. We're not sure how, either.