Sorry to disappoint, but the Australian Television Information Archive has release dates for DVDs up to April 30 and s6 isn't on there. Which isn't to say that it might not be released sometime before then, but it def won't be released in Feb and most likely not March, either.
Grr. Initially I was told sometime mid-Jan. What's the hold up? Season 7 of McLeod's in being released soon, and that only finished about 6 months ago!