Just bought an iPad Mini

For some reason, I really love smaller tablets. I used to think I wanted a really large tablet, but then I got a MBPr and found tablets to not be portable enough to justify owning one. Then I played with an iPad Mini and really loved it. So I finally took the plunge and bought one. How likely do you think a retina iPad mini will be released in the next couple of months? I only wonder because I have an iPhone 5 and can definitely notice the lower PPI of the iPad Mini. Just wondering what you guys thought. I noticed a piece of dust under the screen right in the middle and I am going to get it replaced. Just I just return it and wait?