HobbyKing KK-board V3!

[Trinom]

Exactly. Also the ATmega48PA has 12 touch channels, while the ATMega168PA and ATmega328 have 16.
I have NO IDEA what that means.

Me too. I don't see anything like that in the datasheet

 

[colorex]

Here:

These are the only differences stated, the processor (IC).

	V1	V2.1	V3
Chip	Atmega48PA	Atmega168PA	Atmega328PA
Flash Memory (KB)	4	16	32