Apple periodically refreshes or replaces its devices. Fortunately for consumers, some of those modifications are predictable to the point of knowing the actual date. Why buy an iPad that’s about to be obsolete or one that is about to be replaced by a less expensive, better model? This article takes you thru the options for iPads.
https://www.cnbc.com/2019/03/03/which-ipad-should-i-buy.html