How exactly would you want to update the Air 2, if the 6S will be mostly a little improvement with force touch? Unless Apple introduces Force Touch to the Air 2, there's nothing more to stand out. Yet they took 1 full year to include Touch ID in the iPad line, so they'll likely do the same with the Air 2 regarding Force Touch.
People don't upgrade iPads nearly as fast their iPhones, so there's no need to really upgrade the already great Air 2.
The report doesn't seem "sketchy" to me at all.
Just put an A9 in and make the minimum storage 32 GB. Just like going from the iPad 3 to 4 - minimal changes.