Our default operating system install for most new computers will be Windows 10 Home but Windows 7 is still available in a limited capacity.
As for support, Microsoft will be supporting Windows 7 until at least 2020. The industry as a whole (Intuit, Adobe, Google, Mozilla, Autodesk, etc) will likely continue supporting Windows 7 for a least a couple more years beyond that. The ‘free’ upgrade to Windows 10 is still possible if you have a Windows 7 COA (the sticker on the side, top, or back of your PC or bottom of your laptop. However, if you have Windows 7 you will often be happier sticking with it! If you want to or have to go to Windows 10 while using your Windows license we recommend a fresh install for optimum performance.