It'll arrive in waves...
Wave 1 - raise expectations.
Wave 2 - gouge the gullible.
Wave 3 - release a buggier, slower, plainer version of Windows 7, rebranded as Windows 10.
Wave 4 - after the inevitable class action, own up that Windows 10 requires hardware currently unavailable outside Intel test labs.
Wave 5 - locate the lipstick.
Wave 6 - locate the pig.
Wave 7 - conjoin waves 5 and 6, release as Enterprise Plus Pack for Windows 10.
Wave 8 - increment version number, start at wave 1.