SSE4 instructions are expected to arrive in Intel’s first 45nm product that is expected to sample in the second half of 2007. This includes Intel’s upcoming Nehalem, which will be Intel’s second generation Core architecture. Intel Nehalem and other 45nm processors are expected to begin sampling the second half of 2007 and begin shipping in the first half of 2008.
While not very popular for games, SSE has found a home in many media applications. Currently, AMD releases their CPUs with the same SSE instruction set as Intel.