Microsoft still hosts the evaluation version of Windows Embedded 8.1 Industry Pro. While it is a 180-day trial, it is an official ISO that can be downloaded directly for 64-bit architectures. Direct Link: Windows Embedded 8.1 Industry Pro Evaluation 3. Archive.org (Verified Originals)
Users could personalize their Start screen with more tile sizes and the ability to name groups of tiles. This made it easier to organize and navigate through apps. Windows 8.1 ISO 64 bit Official Direct Link