Apple buys 15~20% of the world's RAM modules, most of them go into iPhones (and iPads). Doubling the memory means a lot of pressure on the supply chain, I guess that's why they've always been conservative on that. That's also the reason they were so late in doubling the storage options, even not fully.
Maybe iPad Air 2 is the time Apple pushes the RAM forward to 2GB, before the next "s" iPhones follow next year.
Maybe iPad Air 2 is the time Apple pushes the RAM forward to 2GB, before the next "s" iPhones follow next year.