Yes, you are correct in that the 'bolete' type fungi tend to come early in the year so this would be out of season. Though fungi do tend to have a will of their own and appear when they are ready not always when we think they should!!! Austroboletus lacunosus is a fungus that is much softer and with a more rounded cap. It has a much more robust stem (stipe) with its surface ornamented with a network of ridges and pits (reticulated). Was this specimen a bit tough and rubbery? It looks like it is an area that has been burnt?! I suspect it is one of the 'fire responsive fungi' such as those from the genus Laccocephalum. It looks very like L. sclerotinium, which for the moment I'll suggest....good find.