The iPhone 6 having only 1GB of RAM will be the longest product cycle that Apple has had without upgrading the RAM...if true, it really is pathetic on their part especially if they plan to integrate multi-tasking into iOS 8.
Sure, their software is tighter and more efficient than the competition but clearly that can't last forever. RAM is the current bottleneck of iOS and Apple's stubbornness to give the SW more breathing room and increase its capabilities is frustrating to say the least.
By the way, if iOS was as compact and efficient as everyone says, we would still have 256MB of RAM and 5 tabs open at once in Safari...