Ok.. first off, they don't release phones every 6 months.. they do every 12 months if you're lucky.
Second, have you looked at how many phones Samsung releases every month? Oh, this ones the new "Galaxy S Plus Nexus Flash Skyrocket 4g LTE+ XX3."
They release a couple phones a month, some with such slight differences that just by looking at them you cant even tell
Such as the "Samsung Galaxy SII Skyrocket".. samething.. with a different processor.. WOOOOOOO..lets release it in the US a couple months after the US just got the original samsung galaxy s2!
And try calling me a fanboy.. because I own more samsung products than probably anyone on these forums. I also own ipods and iphones. So completely unbiased.