Why? Why does it concern you in any way?
It concerns anyone invested in apple (whether financially or emotionally, although emotionally is arguably foolish)
There's a strong likelihood that it will be a poor product that will damage the brand.
People will buy the mini arguing its cheaper and its the same as the iPad, and they simply don't need bigger because bigger is just a luxury.
They won't consider that the resolution, target size, etc into their buying and if it results in poorer user experience, they will write off the iPad as well rather than realizing they got what they paid for.
Apple won't make developers develop for a middle tablet on top of the iPad and iPhone. So it will scale. But making it so it performs as well to scale is a tightrope act. There's plenty of targets on my iPad screen that are frustratingly small as it is.