In limited testing, Diamond Mind Baseball - Version 10 appears to be fully compatible with Windows 8 and Windows 8 Pro. However, DMB will NOT run on Windows RT, so if you are planning on buying one of Microsoft's new Surface tablets that runs only Windows RT, do not expect to be able to use DMB, or any of your other desktop software for that matter.
Here's some additional clarification provided by a well known Windows expert (full article here) ...
Windows RT is a limited version of Windows 8 that runs on ARM-based devices, not on traditional PCs.
Yes, Windows RT is compatible with most, but not all, of the Metro-style apps that also run on Windows 8. That is one advantage of this new Metro environment that graces both systems.
Windows RT will not run any desktop Windows applications beyond the applications that are bundled with the operating system. Bundled applications include virtually every single desktop application found in Windows 8—Paint, WordPad, etc.—except for Windows Media Player. It also includes a fully-functional and full-featured version of Office 2013 called Office Home & Student 2013 RT. This suite includes Word, Excel, OneNote, and PowerPoint. For the umpteenth time, it does not include Outlook.
Let me stress that point again.
Windows RT will not run any desktop applications beyond the applications that are bundled with the operating system. This means it will not run Windows Essentials 2012, Microsoft Outlook (any version), Microsoft Office (any version, beyond what’s included with RT), Adobe Photoshop or Photoshop Elements, or any other Adobe desktop application. It will not run the SkyDrive desktop application (which is part of Essentials 2012, yes, I know), meaning you cannot sync SkyDrive data to your RT device’s storage. You can only use the SkyDrive Metro app, which lets you access SkyDrive only when connected … just as with any other mobile device. It will not run iTunes. It will not run any desktop Windows application beyond what’s bundled with the OS.
Windows RT is not a computer operating system. Windows RT is an operating system for mobile devices.
Surface with Windows RT is not a computer. It is mobile computing device, like an iPad. It is a tablet, a hybrid device that bridges the gap between real PCs and media tablets, where you can work and play.