Here is
a link to the MacRumors review of the iPad mini 5. The article does have a list of seven other reviews near the bottom, but I haven't had the chance to look at them.
The main thing I'm wondering about is the sound quality. My iPad Pro 9.7" has excellent sound coming from four speakers, but my old mini 2 has only two speakers and the sound is rather tinny. I don't expect the mini 5 to compete against a Pro model in sound quality, not even a discontinued Pro model, but I do hope it has a much better sound than my old mini 2 has.