Just after DjangoCon there was a long discussion on django-dev about implementing multi-db support in the upcoming releases:

http://groups.google.com/group/django-developers/browse_thre...

Also, according to JKM, Django 1.0 does suport multi-db, it's just undocumented and at a lower level:

http://www.reddit.com/r/programming/comments/6zbos/django_10...

HTH.