Hm, if you go through the only publicly available source there is no mention of a delay. It just states that there might be a 5G device in the fall of 2020. You can think of many different scenarios where there'll still be a launch in march.

I think reports have been misinterpreted with this article. Other publications also haven't picked this up yet. Which means its probably unlikely - unreliable information.

It makes way more sense for them to wait and release just 1 stacked ipad in a world where the sales need to rise back to the hayday years of old. just my 2 cents sal.