SIMD

x86

• AVX (Advanced Vector eXtensions) -- to be introduced on Intel's Sandy Bridge (2010) and AMD's Bulldozer (2011), and implemented within the VEX coding scheme

Fused Multiply-Add

• The FMA instruction set extension to x86 should hit around 2011

Other Architectures

• PowerPC implements AltiVec

See Also

• "Why no FMA in AVX in Sandy Bridge?", Intel Developers Forum
• SSE5 guide at AMD