yeah it really appears that the KX133/KT133 is turning out to be a REALLY popular chipset. Via needed a break, and gambled correctly with the Athlon chipset.
To add to that, support for the chipset has gone through the roof (look how many updates you've gotten recently for the 4in1 drivers and BIOS updates. Bill on this forum is testing a new BIOS that gets WAAY better memor scores then it did before). It's only weakness now AKAIK is the AGP port, with not quite as much performance as it's competitors, though you'll rarely see the difference visually.
and NO the KT133 will not need bugs to iron out, becuase all it is, is a KX133 with Socket A support.