As far as Windows 8, I didn't get to see the new boot manager because I reverted back to a GRUB2 MBR, so now I am curious to see it live.
Anyway, I did break the booting of my Windows 7 and 8 during my process, so I burned the W8CP to a DVD and used it to repair the booting of Windows 7, which is the active and system partition for my various Windows.
Then I used EasyBCD in Windows 7 to add entries for Windows 8 and XP.
However, Windows 8 wouldn't boot winload.exe until I copied the new bootmgr to the root of my system partition (W7).
What happened next? Well, when I chainloaded the Windows system partition from GRUB2 as usual, Windows 8 booted right up without giving me the choice of Windows OS like before with Windows 7.
However, finally copying the (new?) file BOOTNXT from the Windows 8 root to the Windows 7 root gave me the menu for the BCD I had created under Windows 7 using EasyBCD.
I told this story to highlight the BOOTNXT file. I suppose it allows for backward compatibility or whatever.
Well, I don't know if this is new information for you, but there you go.
Thanks for all of your hard work, and thanks to the whole EasyBCD team, it has made life so much nicer for multi-booting various Windows!