For more information see the Spatial Design website. Version 2.20 is packed full of all sorts of goodies, including a 'Vehicle Cam', cloud and sun movement, handy 'global change' features and a FOV calculator, to name but a few. No need to update if this does not affect you. Daniel Parnham releases Terranim which generates animation scripts for Terragen. This should soon be possible with the next release of Terragen, via a script file.
Animation is achieved by means of a script file.
The first release of Terranim will coincide with the release of a script-capable Terragen and full documentation of script commands.