Also very tempted by this. I bought the 3 on launch day and it's been great but since the upgrade to 8.1 browsing is painfully slow and the experience overall has dropped.
The air 2 seems like it would give the most future proofing. More ram. Better CPU. So hopefully it will still run well in two years when we hit iOS 10.
I'm just not sure I can justify paying £400 for it.
Plus a jailbreak is essential since I only really use it for moviebox and XBMC. So without a jailbreak it's basically an expensive paperweight (for my personal needs).
So I'm torn between waiting for BF deals and trying to grab one, and hoping it's running 8.1 and not anything newer. Or just getting a £200 android tab and never having to worry about the jailbreak issue and saving £200. I know it sounds like a no brainer. But I love the iPad.
Better get it now while apple still sells them with 8.1 on it