if you have any questions relating to the XC4000 families hardware including questions on availability, replacements etc, see:
(Xilinx Answer 33556).
if you have any questions relating to the XC4000 families software including questions on software versions, bitstream compatibility, see:
(Xilinx Answer 33555).
Parts covered by the Answer Record:
XC4003, XC4005, XC4006, XC4008, XC4010, XC4010D, XC4013, XC4013D, XC4020, XC4025, XC4002A, XC4003A, XC4004A, XC4005A, XC4003H, XC4005H, XC4002A, XC4003A, XC4004A, XC4005A, XC4013XLT, XC4028XLT, XC4062XLT, XC4013XLA, XC4020XLA, XC4028XLA, XC4036XLA, XC4044XLA, XC4052XLA, XC4062XLA, XC4085XLA, XC40110XV, XC40150XV, XC40200XV, XC40250XV