Amazingly, the LifeMorph does load into Squeak 6:
Ah, you can even drop morphs in it and they will dissolve into Life cells! Nice touch!
There is an entry in SqueakMap BTW that could be updated (the download link is dead):
http://map.squeak.org/package/cc20b428-f480-4e59-9878-a244069f0c22/autoversi...
The date there is 2003
Stef