In the last episode (Jan 26), Mirar @ Pike developers forum said:
I really think we should get INT_TYPE = INT64 to work. In not so many months there will be 64 bit systems on the market, Intel IA64 and AMD Hammer (?). (Someone else probably have the current estimate.) Having 64-bit ready code then might be nice. :)
Pike on Alpha and Sparc have been working for a long time.