According to a listing of Indian logistics website Zaumba, the Samsung has began testing the Galaxy Note III in three different screen sizes. If Zaumba is to be believed, Samsung hasn't yet decided wether the Galaxy Note III should pack a 5.5", 5.7" or 6" display. Mind you, couple of reports clearly suggested that Samsung has chosen to build the Galaxy Note III around a 5.7" display, so maybe the testing is already complete.
Furthermore there are rumors floating around suggesting the Koreans' R&D team is testing flexible OLED display technology alongside standard OLED and LCD display variants. The original Galaxy Note and Galaxy Note II both packed Super AMOLED screens.
There's strong evidence that points to the Qualcomm Snapdragon 800 chipset as the heart of the Samsung Galaxy Note III. But even in the performance department Samsung is said to be preparing an alternative version of its third-gen phablet and ship it with the latest Exynos 5 Octa chipset in some regions.
Other specifications include 3GB of RAM, a 13MP camera with purported optical image stabilization and the freshly announced Android 4.3 Jelly Bean. Naturally, there'll be the an updated version of the S Pen accompanying the Note III, but nothing about it has leaked just yet.