Not sure it's happening here

David Appell puts up a map of tropical cyclones from a study which says there is a long term poleward shift in where their maximum intensity happens.

I'm not sure that this is happening around my part of Australia, though.  I have been saying for years (and friends of my era agree) that it seemed not uncommon in my childhood for small cyclones to drift down towards Brisbane and some would reach the stretch of coast between the Sunshine Coast and Bundaberg.   That seems to have stopped as of about the 1980's.  Still, I guess that is a different thing from where the maximum intensity occurs.   Some BOM person needs to explain to me what has been going on around Queensland since I was a child.

OK, perhaps they already have:

Trends in tropical cyclone activity in the Australian region (south of equator; 105-160°E) show that the total number of cyclones has decreased in recent decades. However, the number of stronger cyclones (minimum central pressure less than 970 hPa) has not declined. 

This overall decrease may partly be due to an improved discrimination between tropical cyclones and sub-cyclone intensity tropical lows. Tropical cyclone numbers in the Australian region are influenced by the El Niño-Southern Oscillation phenomenon and the decrease in total cyclone numbers may be associated with an increased frequency of El Niño events. A number of long-term trends and oscillations have been observed in other parts of the world, extending over many decades. It is difficult to sort these natural trends from those that may result from global warming.

Potential changes in tropical cyclone occurrence and intensity are discussed in detail in the 2007 report, Climate Change in Australia Technical Report - Chapter 5: Regional climate change projections (8.9MB) See: Chapter 5.9.1 Severe weather: Tropical cyclones. There have been three recent studies producing projections for tropical cyclone changes in the Australian region. Two suggest that there will be no significant change in tropical cyclone numbers off the east coast of Australia to the middle of the 21st century. The third study, based on the CSIRO simulations, shows a significant decrease in tropical cyclone numbers for the Australian region especially off the coastline of Western Australia. The simulations also show more long-lived eastern Australian tropical cyclones although one study showed a decrease in long-lived cyclones off the Western Australian coast.
Each of the above studies finds a marked increase in the severe Category 3-5 storms. Some also reported a poleward extension of tropical cyclone tracks.

Projected changes in tropical cyclone characteristics are inherently tied to changes in large-scale teleconnection patterns such as ENSO, changes in sea surface temperature and changes in deep convection. As global climate models improve, their simulation of tropical cyclones is expected to improve, thus providing greater certainty in projections of tropical cyclone changes in a warmer world.