There was only an update last week (v2.7.2). We're working on a few things but happy with the stability at the moment, however Ive made some optimisations for iPad3 as it runs too slow for my liking at the moment...maybe we'll release that soon.
Problem with iPad 3 is it is now loading 2-4x the images to display with only a marginal increase in hardware performance so it's slowed down a bit. I've fixed that by lowering the resolution slightly so it looks hi-Rez (good) still, town names are slightly larger again but it runs a lot faster.