well, it seems a majority of the people on here were right, you can install the new version (which is the same as the old version by the looks of it) and remain activated no problems at all. Faikee will be most upset.
So the esd files received through WU are the same as those that were posted here on mdl plus a folder with all the updates so far that get applied when upgrading,correct me if i'm wrong.
Here in Argentina, UTC (-3:00) started to be pushed at 5:10 a.m. I had W 10 PRO x64 10240.16393.amd64fre.th1_st1.150717-1719 / UBR 16405 / CLEAN INSTALL / I'm still on Insider Account. 642 mb and still downloading ...
After the updates files were downloaded, when i run setup.exe it cannot update and i have a boot.wim error.