There wasn't any new updates regarding Retina resolutions. The current method uses pixel-doubling to account for the retina resolution, which accounts for some of the softness of the image previews (there also isn't any pre-sharpening applied before sending the previews when connected to the back directly - compared to connecting to Capture One). Sending full-size retina-ready previews would require sending significantly more data and potentially hurt device performance.
The Adhoc issue seems mostly isolated to iPads running iOS 7. I was able to fire up my iPhone 5 with iOS 7.0.4 without any issues to an IQ260 right away. This most likely has to do with the programming iOS differences between major devices such as iPads vs iPhones. While it may seem like all iOS7 installs are alike, there are unique builds for each device configuration.
As I mentioned in the blog post, I could usually get the iPad to work if I first connected to Capture Pilot with my iPhone, then connected with my iPad. While only one device can access the actual server at a time, simply having the iPhone see the servers seemed to help. If the iPad went sleep, however, it needed the iPhone to connect again.
In the mean time, we're keeping an eye on this issue and working closely with Phase One. Contact us or check out our blog for updates!