Apple can cut the support with no problems. You want the iOS 9, change to a new iPad.
I told in another thread and i'm going to tell it again: Apple cares about its own costumers...but since costumers "car€" about Apple.
Who paid 399€ for a iPhone 4 in its last year of comercialization (2012/2013), didn't have support for iOS 8. And i will not talk about iPad 1....
Apple besides one occasion (that is different to this) has never cut support for devices it has sold during the year before which ever iOS version we are talking about was released. The iPod Touch 4 was not the premium model sold at the time for one, for two, the iPod Touch 4 was not hardware related to 5 other devices that were still supported, like the Touch 5 is.
The iPhone 4 ceased worldwide sales in September 2013 and it received a year of updates, right up to September 2014 when iOS 8 was dropped.
The iPad 1 was dropped in March 2011, and it received a year and a half of updates, right up until iOS 6 came out in September 2012.
The iPad Mini 1 is selling in significant numbers, and counts for about 22 percent of installed iPads. Between the Mini 1, iPad 2 and iPad 3, A5 devices count for around 55-60 percent of installed iPads.
Lets remember that Apple prides itself in its lack of fragmentation, and leaving A5 devices out would mean only around 40 percent of iPad users would be able to upgrade. At lets face it, if they're not going to introduce many new features, and this is a bug fix an performance fix release, there is no excuse for dropping
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While I sincerely hope this is not what the future holds for us, unfortunately, I am inclined to suspect that this is the scenario that may await us.
There could be a new model at WWDC, I doubt there will be one announced at this event as there have been no part leaks at all.