Trimble has released a new version of SketchUp, via a wide range of pricing packages: here
“Change to SketchUp Licencing
WIth the introduction of Sketchup 2013, Trimble have changed the way they licence Sketchup, the key points are:
- with each stand-alone licence purchase you MUST buy maintenance of 1,2 or 3 years
- with each network licence purchase you MUST buy maintenance of 1 month, 1,2 or 3 years
- upgrades are free but you MUST buy maintenance of 1,2 or 3 years”
The free version of SketchUp is still available.