????-??-?? Technology Preview 2
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Previews :
  * Scaling is now logarithmic (slower when zoomed).
  * Drawing now takes advantage of multiple CPU cores.

3D Explorer:
  * Added ground texture and skybox.
  * Progressive rendering now takes advantage of multiple CPU cores.

Scenery :
  * Added clouds hardness to light.
  * Added sun halo control.
  * New cloud model with 2 noises : one for the global shape and one for edges.
  * Terrain shadows have been improved and are now configurable.

Rendering :
  * New texture model (perpendicular displacement and thickness).
  * Added full scene antialiasing (FSAA).

GUI :
  * Improved curve rendering.
  * New material editor.
  * Added render timer.

Misc :
  * Version handling in saved files.

2012-04-20 Technology Preview 1
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First preview version :
  * Ground with simple texture layers
  * Water with waves, transparency and reflection
  * Sky with sun
  * Atmosphere with fog
  * Cloud 3d layers
  * Two-pass rendering
  * Form-based GUI, with real-time previews