Windows checks for latest updates before the installation and installs them usually also during installation process. If something isn't possible to add at once, these will be installed after some time automatically. Don't worry. You'll get everything, what is needed and what is available.
They mean the March updated ones, nobody knows if they are released as iso. I didn't see any other then 1511.1 aka 10586.103 aka feb updated 2016. When even paul doesn't have newer ones on msdn the Feb Updated 2016 are the last released versions.
#Enthousiast March updated ones, as iso? Nobody knows it, are you sure? There is not yet. (open to the public)
Windows 10, Version 1511 (Updated Feb 2016) is the latest ISO released on 3/4/2016 as far as I know apart from the preview ones.
murphy78 has a march copy on kickass torrent go look it up ive used it an works great Release File: Win10_10586_x64_Mar2016_4in1_en-US_murphy78.iso Size: 4.14 GB SHA-1: 37C992CC88B28F39B8FAA87DA8D40973CB27D3E7
yay dude, although torrent files is very slow to download but is better in some situations because we don't lost nothing;I make use of them frequently using Qbit torrent is very good
finding the right torrent and trackers helps with speeds. DL'ed 17.6GB the other day in 25 minutes. The seeds were plenty and sharing full speed. You just never know what will be seeding good vs not.