I highly doubt this rumor is more than just that: a rumor. I can't see Apple abandoning their flagship lineup of iPad. Nor have they have ever gone a year without a new iteration; in fact, they did even do the iPad 3 & iPad 4 in the same year. [/logic]
And vice versa: The 12" tablet isn't needed when you have a 9.7" one.Apple should release an iPad Mini and an iPad Pro.
The 9.7" tablet isn't needed when you have a 7.9" one and a 12" one.