Sony USA have reduced the cost of the CBKRGB01 F3 S-Log upgrade by a huge amount, from near $4000US to $900US. Whether Sony Australia will follow suite is not known at this point, but I’d advise waiting to see. My CBKRGB01 has been paid for and back ordered for over a month now, but thankfully Videocraft allowed me to cancel that and refund me, to wait and see where this heads.
No doubt this is the result of the Canon C300 offering C-Log as standard, even though C-Log does not appear to be a true logarithmic gamma.