Sorry, Man. It won't hit SVT dealer's lots until at least October of this year, and will in any case be limited to 2000 units. I'd order one now, if I was you. MSRP=$35,000.
My '91 LX 5.0 has a few more years in it, it's only got 120,000 miles right now. But I'm looking REAL hard at a new Mustang. Options abound, of course, and they include the '02 GT, the MACH-1, and waiting until '04 for the BOSS 302 to return. All of the above clock in for under thirty grand, and the GT actually runs under twenty-three.