Confirmed by people who have installed and patched.
15gb on the disk, and 420mb patch.
At least the patch is not too big - I still reckon it is going to take a couple of hours with the terrible updater.
Hallie! Another Sydney player.. noice ;)
The patch took for me in total just under 5 minutes, averaging around 220kb/s. It was mighty impressive this time around! I also had maxed out remote and local connections (40/20 respectively).