Check the development thread
http://chdk.setepontos.com/index.php/topic,4348.0.html to see if anyone has already tried that version.
If not, you can try the 1.01b on your 1.01d camera. There are three possible outcomes:
1) Most likely: It crashes. Removing the battery and deleting CHDK from the card will fix it.
2) Less likely, but still happens occasionally: It works. Sometimes canons changes are so small that the same CHDK works on both versions.
3) Much less likely (never happened that we know of), but theoretically possible: It destroys your camera.