When Samsung unveiled the Galaxy Note 3 they said it's got a 5.7" Full-HD Super AMOLED display (386 PPI) - but they didn't reveal what is the sub-pixel arrangement. Some sites say it is a Pentile display while other say it not.
According to Chinese site RBMen, the Note 3 uses a Diamond Pixel architecture - similarly to the Galaxy S4. Diamond Pixel is indeed a PenTile subpixel scheme, and there are twice as many green subpixels as there are blue and red ones. The green subpixels are oval and small while the red and blue ones are diamond-shaped and larger. So perhaps both reports are right: it is indeed a PenTile display, but not a regular one...
The Galaxy Note 2, with its 5.5" 1280x720 HD Super AMOLED display, uses an RGB matrix in a unique arrangement (see the photo below). Samsung calls this new matrix S-Stripe. This is not a PenTile display as each pixel uses three subpixels (RGB matrix):
What Samsung is branding as S pattern has been arround for a long time (over 70 years ago) as Bayer pattern in sensors.