It's been confirmed (via Tinh té) that the new, much leaked, iPhone 4G/HD will sport Apple's Samsung manufactured, in-house designed A4 SoC (System on Chip) - microprocessor.
I expect, however, that they have underclocked it, in order to gain better battery life, in line with what Steve Jobs was saying at the OS 4 event back in April.
Video + Pics on the full post.