Wait if You Need to do More Research
Are you unsure if this is the right iPad for you? Are you tempted to wait for the new iPad Pro?
If you need to decide on what iPad you need, and how much storage you want, this is a good reason not to pre-order.
The same goes for if you aren't sure that you want the larger screen size. This change does make the 2019 iPad a little larger and it might be enough to turn you off.
If you hold off until the new iPad is in stores, you can walk in and pick one up, test it out and play around with it to see if it is the right choice for you.