Wow that keyboard is just too freaking cool. Like...seriously.
Up intil :50 I was thinking "Meh, I can hold off for the GS5 when my upgrade is available," but wow that keyboard is awesome. It'll be tough. Only problem is it's an accessory, meaning you have to drag it around with you if you want to use it. It looks cordless, but that means it either has to be charged or uses a standard battery. If it's successful enough then maybe with the GS5 it'll be incorporated INTO the phone.
That will be the day I will go outside, look into the sky, and shout "THE FUTURE IS NOW!!!!"