The reason AMD hasn't offically released anything higher than 1.2 GHZ is because the 1.5 GHZ P4 isn't a threat. Can you see around the corner??
Oh yeah and this should give you something else to think about...2100 DDR isn't the top

current DDR chips are slated to running @ fsb speeds of 166 (x2 DDR) & (4x DDR)
By by RamBus
Benchmark developer faults P4
The developer of a new benchmark program claims that Intel Corp. has influenced the composition of standard benchmarks to its own benefit. Moreover, he says Advanced Micro Devices Inc.'s Athlon chips perform considerably better than the Pentium 4 in tests that mirror real world working conditions. He also maintains that PCs with two slower Pentium IIIs outshine desktops with 1.5-GHz Pentium 4s.
Randall C. Kennedy, developer of Benchmark Studio 1.0, started working on his chip testing program while working with Intel but split under acrimonious circumstances after he published a less than flattering article about Pentium CPUs. Intel disagrees with his claims concerning both the standard benchmarks and Pentium 4 performance.
For more information about the benchmark, read eetimes.com.
Athlon wins analysts' prize over P4
The Microprocessor Report's coveted Best PC Processor prize has gone, for the second year in a row, to Advanced Micro Devices' Athlon processor. The analysts who work for the expensive, industry publication surprised many who thought that Intel Corp.'s Pentium 4 chip would dethrone the less expensive Athlon. Kevin Krewell, Microprocessor Report senior editor, called the P4 "unbalanced" and said that it did not outperform the 1-GHz PIII in office applications.
Intel did, however, garner a win in the best mobile category where analysts chose the Mobile PIII with SpeedStep over Transmeta's Crusoe.
Read the source article at pcworld.com.