Still waiting for Windows 10 you can download an ISO and place it on a USB Stick or force it by poking Windows Update.
To get the media direct from Microsoft download the tool and create an ISO easy and handy.
Create a stick get the Download Tool Now (64-bit version)
if you want the X32 version it is also there.
Choose what to do Upgrade now or create stick. and Pick the Language and edition you want. There is no enterprise edition here you need to get this from the SA site and or if you test the Windows 10 version and runs no production get this from the MSDN site.
Pick the media and choose ISO of USB
The download is in progress and will do a verify just to make sure the Stick is OK.
But if you want to use Windows Updates to poke a bit to get the Windows 10 bits.
Type the following command in the Windows 10 task bar search field and press enter:
Want to make sure that your free Windows 10 update gets detected for download use this command:
WSUS uses a cookie on client computers to store various types of information, including computer group membership when client-side targeting is used.
In this case you should use this command:
wuauclt.exe /resetauthorization /detectnow