More cores is not necessarily a solution. More cores brings more overhead; which at some point will nullify the advantage of delegating computing tasks. It's an obvious fact that CPU frequencies have to go down with the current transistor technology simply because of the vast amounts of heat produced.
However, given the upcoming transistor technology (Depleted Substrate) that will not be the case. As such, increasing core-count might come to a halt once they're in use and architectures might even revert back to using a smaller amount of cores.
To answer the OP's question: yes, they're definately the future. The near future, it's too soon make statements about 5+ years from now.
Quote:
Originally Posted by Raphael
I'm looking forward to the new 16 core processors Intels working on to also integrate the GPU's on them. Bye bye graphics cards
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You'll get disappointed when you find out they won't be anywhere near an actual seperate GPU at said time though.