You can order Virtex-5 devices from your distributor now, and he will offer short delivery times. Whether the distributor carries these parts on his shelves is entirely his business decision, but he can always get them for you from Xilinx at short notice. ("4 to 6 weeks" seems to be the standard answer, but don't be surprised if it is much faster.) Available from inventory here at Xilinx are nine part / package combinations, eighteen if you count the leaded/lead-free versions:
XC5VLX30-1FF(G)324C and -676C XC5VLX50-1FF(G)324C and -676C and -1153C XC5VLX85-1FF(G)676C and -1153C XC5VLX110-1FF(G)676C and -1153C
LX is the logic-oriented sub-family, with BlockRAMs and DSP slices, but without multi-gigabit transceivers. See the data sheet on the Xilinx website. The 30 to 110 is a proportional indicator of logic density (thousands of "equivalent Logic Cells") The -1 stands for the slowest speed grade (the only one available this early) The FF stands for flip-chip ball-grid array, the one way we package all Virtex-5 family devices The G stands for "green" = lead-free packages which are all available right now.
We have found over the years that small-volume users and consultants often are the most enthusiastic early adopters, but they may not always be sure about instant availability. Now you know ! More parts to come very soon.
Peter Alfke, who has been working on and with these parts for over a year.