Just you wait. Mozilla 1.0 is scheduled for release in April 2002.
Judging from the track record of their previous milestone releases, they're more or less on schedule.
And yes, the browser of Mozilla 0.9.7 is very very usable, although there are still a few stupid bahavioural quirks to sort out. I don't know about the mail and news client or Chatzilla etc. though.