According to Maxwell this is not just an update for Maxwell Render but complete rewritten, redesigned plugin for Modo R2. Because the changes Maxwell warn his user that the Maxwell Render parameters saved with previous versions are obsolete. The main concept of the renderer is still the same; center of the plugin interface is the Maxwell Render plugin windows. This was completely reorganized to make it more compact, clear and user friendly.
Short list of changes (for more information visit Maxwell):
· Maxwell Render properties
· Polygonal object export
· Replicator export
· Maxwell Fire
· Texture export
· Maxwell Render environment
· And more...
Source and full article: MaxwellRender