Since Microsoft has now officially launched its newest Windows 10 OS, it does not come as a surprise that the Windows 10 ISO image is also available for download.
In case you do not wait for the automatic update or for some reason have problems with the "Get Windows 10" icon in the taskbar, you can get the official Windows 10 ISO image that is currently available over at
Microsoft Windows 10 Download website. The image is available via a simply utility called Windows Media Creation Tool, which is available in 32-bit and 64-bit versions.
The Windows Media Creation Tool offers you to select which language do you want, which Edition of the Windows 10 OS and offers you to choose 32-bit, 64-bit or both architectures and burn it on a blank DVD or a USB flash drive.
In any case, it is up to you to choose as Microsoft has made sure to make the upgrade path quite easy.
Source:
Microsoft.com.