The latest version of Parallels Desktop for Mac, Version 10.1.4 (28883), now includes an internal option to download Windows 10 Technical Preview and Office Preview for Windows 10. All users need to do is go to Parallels Desktop > Check for Updates...
Parallels, in a statement on Wednesday, said,
Now users who wish to try the newest OS from Microsoft safely and easily can do so without the inconvenience of deleting an existing OS or the uncertainty of installing a new and nonfinal version of Windows 10 directly on their machines. The Parallels Wizard makes it simple to download the Windows 10 Technical Preview directly from within Parallels Desktop, creating a virtual machine to try out everything Windows 10 has to offer, including such features as the new Start menu, Photos, Maps app, Cortana and Windows Store beta which offers Office Preview for Windows 10.
For new users, Parallels Desktop for Mac allows the running of a wide range OSes as virtual machines, including Windows, Linux and even OS X. It is priced at US$79.99. There is a student edition for $39.99.
The latest review of Parallels 10 at The Mac Observer is: "Parallels Desktop 10 for Mac: More Mobile Efficiency, More Ease of Use." I installed Windows 10 Technical Preview earlier, and it went flawlessly.