I think the reason they launched the colourful iPhone 5c in plastic is so they can launch the iPhone 6 in a range of anodised aluminium colours like the current iPod touch. That way they get to seperate the iPhone business into two product lines: more affordable plastic versions and more premium aluminium versions. Both in a range of colours.
It's a strategy they've successfully implemented in other product lines such as the MacBook with the MBA and MBP.
I will be most interested to see if they drop the current "numbers" for "names" like Mini, Air and Pro. Maybe they'll come up with a new set of names like the iPhone 5c renamed the iPhone Play and the iPhone 5s/6 renamed the iPhone Pro.
It's a strategy they've successfully implemented in other product lines such as the MacBook with the MBA and MBP.
I will be most interested to see if they drop the current "numbers" for "names" like Mini, Air and Pro. Maybe they'll come up with a new set of names like the iPhone 5c renamed the iPhone Play and the iPhone 5s/6 renamed the iPhone Pro.