The last major release for lm-sensors was back in February 2009 when 3.1.0 dropped. Now version 3.2.0 is here.
Lm-sensors is the software for monitoring the hardware health of Linux systems with monitoring hardware such as the LM78 and LM75. You can learn more about what lm-sensors is capable of here.
According to the 3.2.0 announcement, the biggest change is the license, which is now the LGPL. The sensors-detect code now supports more hardware and pwmconfig handles monitoring fan speed better.