I knew The Typing of the Dead 2003 had been released for the PC in Japan, but it would appear they've gone right ahead and released TOTD 2004.
It seems there isn't much that's new aside from new drills and a highres mode (which is a pity, since I imagine it would be nice to have some of the stuff from The House of the Dead 3). At any rate, there's still a playable demo available (and at 63 MB, it's a lot smaller than the original TOTD demo from a while back).
I wonder if there's still any chance of this getting released outside of Japan?
http://sega.jp/pc/soft/tod/
http://sega.jp/pc/soft/tod/dl.html