ISO (for Community, Professional, Enterprise, and Team Foundation Server) Size: Approximately 7GB to 8GB (varies by edition)
vs_enterprise.exe --layout c:\vs2015_offline --add Microsoft.VisualStudio.Workload.NativeDesktop --includeRecommended --lang en-US visual studio 2015 update 3 offline installer
Visual Studio 2015 Update 3 (Final Update for VS 2015) ISO (for Community