No. There's always a final update to the old OS around the time the new OS is released. That way Apple can fix the last remaining bigger issues with the old OS and secure compatibility between the old OS and the new OS.
Whether 10.4.9 or 10.4.10 will be the last update is only known to Apple but that a final 10.4 update will be around the 10.5 release is inevitable.
so does this give any hint as to when leopard is coming out? say like 3 months from now or what not?