I appreciate your response to my question. I find it hard to believe that music production companies would not foresee the integration and implementation of their products with the latest OS systems across the board. Let alone the fact that many of the earlier versions of Windows(xp,7) are going to be phased out.
Arturia should re-label their products as non-compatible or not recommended with Windows 8. I don't think that Microsoft would like to be left out in the music business industry.
One of the leading DAWs companies around like Cakewalk offers and believes in Windows 8 products by offering support. As of matter of fact their latest version of Sonar X2 which offers touch screen features only works with Windows 8.