NO The new Edge is NOT part of the Insider Program. There is a separate Team developing the New Edge. The Edge Team has already said the 1st Build released will be for Windows 10 64bit ONLY.
The link does install “MicrosoftEdgeSetup.exe” but then fails, as the installer is only available for Microsoft employees and “Azure Premium” users now, according to the blog post.
I managed to 'install' it with this cmd: MicrosoftEdgeSetup.exe /install "appguid={F3C4FE00-EFD5-403B-9569-398A20F1BA4A}" but I how can I try and launch it?