First a bit of background. I am a huge fan of mobile skrittering, from the moment I wrote my first character with my finger, I knew I could not really go back to using mouse. When the iOS app was still in development, I got myself a new android phone, its support for flash and the ability to skritter being major deciding factors. Now flash is no longer supported and behaves funny and I hear left and right how awesome the iOS app is.
So I'm thinking of buying an iPod touch, sort of a dedicated skritter device. My research shows that an updated 3rd gen iPod should be able to run the app, the skritter app press information tells me I need a 4th generation. I intent to spent as little as possible but I also want to avoid having an obsolete device in a few months (the sort of thing that happened with my phone).
Finally, my question: how likely are the minimum requirements to change in the next year or so? Will a 3rd gen iPod be enough? I am mostly interested in the Japanese version but I'd appreciate info on both.