I've been looking into and tried to switch to other responsive themes, premium ones mind you, but nothing is as satisfyingly flexible and well made as Atahualpa. Going through the forums I saw there there was talk back in February of making Atahualpa 4 responsive, among other things. Any news on this? Should I wait for it?

I too "test out" other themes to keep up to date with what's happening and agree there is nothing I have found to date that is as flexible as Atahualpa.

I believe we will eventually see a responsive version but wouldn't want to set an ETA. In the meantime if you need mobile support there are plugins that can help with this but many say the theme works fine in most situations without a plugin.