Don't spread false information please.
I am working with nvda 2018.1 on a win7 machine so not nvda 2017.4.
From: Walker, Michael E
Sent: Wednesday, June 13, 2018 6:23 PM
Subject: Re: [nvda] For windows 7 users
Except for if you are on a workstation where you do not have access to upgrade to Windows 10, given your message, then you should use NVDA 2017.4.
From: firstname.lastname@example.org [mailto:email@example.com] On Behalf Of Jessica D
Sent: Wednesday, June 13, 2018 11:22 AM
Subject: [nvda] For windows 7 users
This message is for Windows 7 users.
You will not receive NVDA 2018.2
2017.4 is the last version you'll get.
I'd highly suggest upgrading to Windows 10.