If you do not need an iPad now, wait until October when a new iPad is generally announced. Make your decision based on your urgent need.
Lol why do you think they will announce a new iPad in October ? They haven’t done annual upgrades ? At least for a while. The 10.5 to 11 took about 16-17 months and the wait between the 9.7 and 10.5 was longer I think. If any iPad gets upgraded it probably will be the 9.7 iPad not the pros.... if you can get a good deal now ( $100 or more off ) you should probably be safe and buy one now ...