"Alpha 21364 (EV7) is based on 0.18 micron to be shipped by this year end and EV79 based on 0.13 micron SOI will be up next. EV7 will be at 1.2Ghz while EV79 will be at 1.6Ghz.
The Alpha 21364 EV7 chip will have 152M transistors, 1.75MB integrated on-die L2 cache, 32GB/s of network bandwidth, integrated RDRAM memory controller with 8 channels up to 12.8GB/s of memory bandwidth."
And of course, the (very aptly-named) roadmap:
See the rest of the images right here.