We checked the new "reward fees" as of last night on a range of routes, which you can see here:
Qatar Airways Privilege Club has quietly increased the surcharges payable when you redeem Avios on many of its flights, including to Australia.
www.australianfrequentflyer.com.au
For reference, the old "carrier charges" were USD25 per sector in Economy or USD50 in Business/First. They now seem to be a fixed rate which is linked to the geographical "zones" you're flying between, and are based on the Origin & Destination rather than per segment.