This comes as a surprise to many, Slashdot discusses Trimble To Acquire Google SketchUp.
Their summary: "It looks like Google is selling off SketchUp or, conversely, Trimble is acquiring it. Despite several indications there will continue to be a free version of the 3D modelling software, users are unsure about what this will mean for the SketchUp community at large as indicated by the comments on the official Google SketchUp Blog post. They are, however, rejoicing that they will be freed from Groups for SketchUp discussions."
From the Trimble press release: "[...] we are committed to continuing to provide SketchUp as a free version to millions of users."