According to DigitimesAMD is going to launch his new 400MHz FSB Athlons in mid-May. These will be the Athlon XP 3000+ and the Athlon XP 3200+, based on the Barton core.
On the other hand Intel will introduce his 800MHz FSB Pentium 4 3.0GHz the 14th of May. The 2.4GHz, 2.6GHz and 2.8GHz processors with 800MHz FSB (these CPUs are already avaible though) will be introduced together with the new Springdale chipset the 21th of May. Rumours go that the Pentium 4 3.2GHz will be announced on the same day!