Demolition Master 1.5
Demolition Master is an advanced destruction tool for 3ds Max, with several improvements in version 1.5.
3ds Max Particle Flow Tutorial - Barn Tornado
Pete Draper has made an 11-part tutorial on creating a tornado using Particle Flow in 3ds Max.
Krakatoa MX 2
Thinkbox Software have released Krakatoa MX 2, their particle simulation plugin for 3ds Max.