Apple is famous for their secretiveness about new devices. On October the 16th we expect the next bunch to be revealed. Marketing-wise this might be perfect but for us independent developers it isn't. Only then we will know how to support them in our software.
The rumors indicate there will be a new iPad, probably with a 3x retina display like the one in the iPhone 6 Plus. But we have to wait until the public event to learn how to make our apps support the new devices.
This unfortunate situation doesn't only lead to unnecessary long times until existing application will exploit the new hardware in its full glory. Its seems to hurt the quality of Apples own software as well.