If you have already downloaded and installed the Windows 10 Technical Preview for Enterprise on your PC, you will have plenty of time to test it out. Microsoft has revealed that the preview build won't expire until April 15, 2015.
Microsoft added, "If you're running Technical Preview, we'll send you notifications beginning on April 1, 2015 to remind you that it's time to upgrade your PC to a newer version." The company is expected to release a consumer preview of Windows 10 sometime in early 2015.
In other words, don't worry if you haven't downloaded the preview build yet; you should have lots of time to do so before Microsoft pulls the plug. Do you plan to wait and see what other think of the Windows 10 Technical Preview before you download and install it on your PC, desktop or tablet?