The latest version of miniStat2 supports external module from InCrew
Software called SpeedIt, that allows 3rd-party software to obtain
temperature values from Intel Macs sensors. So you need to download
and install it manually in order to
check temperature.
download
The reason why you need to use external software to check processor's
temperature is because Apple haven't implemented any sensors drivers
for new Macs. Such unusual software like SpeedIt is the only way to
get temperature values directly from new Intel Core Duo processors.