Last week Microsoft announced their plans for Windows on ARM (WOA). It is intended to be an iPad competitor, meaning that there will be a version of Windows that runs on ARM as well as the traditional x86 version.
http://blogs.msdn.com/b/b8/archive/2012 ... cture.aspx
Both the x86 and ARM versions will have two interfaces: the Metro UI style and a desktop style. The x86 versions will have full featured versions of both interfaces. However, the ARM version will have a Metro UI, and a limited desktop interface that will have a bundled version of Microsoft Office.

Independent Software Vendors won't be able to install their applications on the desktop interface for ARM. They will be able to offer Metro UI applications on ARM, but I believe they'll have to go through the Microsoft Software Marketplace to allow users to install it. The x86 version will be the same as it's always been.
It's probably very early to ask what SoftMaker's plans are as the consumer preview for Windows 8 comes out February 29th. I wanted to make sure that you had a heads up.