Well i have news for you, you have not seen anything yet!!
Looks like oems are going to continue to push and merge the realm of smart phone and tablet. Hauwei 6.1 inch screen
My Thoughts: Size wise I think the note 2 is about as large as people may be truly willing to go. The note 2, though larger than the original note, went to a slimmer design to still feel like a phone. Before an oem can truly go larger they are going to have to improve the glass design an durability. Being the way to go may be in going more glass and less bezel (ie razr m). LG is learning first hand that the design factor is very important in selling large devices. I do think we will see some bigger devices screen wise but we will get to a point where we will have an all screen phone with a piece of aluminum wrapped around the device. To get there we will need glass technology that can withstand the stresses of heat, cold, torsion, and flexing over a long period of time. As some of the larger panels may be susceptible to stress fractures from daily use (especially from those who use their device naked and carries it in a pocket). How long before we see a nexus phone with a 5-6 inch screen.
Happy ANDROID NEW YEARS!!!!