Found this custom Nendoroid Akemi Homura at 2ch.
Body / outfit is pretty detailed and the face looks like an original. The ribbon was edited in to suit the last episode, which is why it looks kinda out of placed. Will have to lurk for an unedited version later.
Still searching for more images of this custom, but 2ch gives me a headache as much as 4ch does.
I think we can safely assume that more official Nendoroids from the Madoka series will appear (just like
Nendoroid Kaname Madoka), so I'm hoping GSC will include this illustration by CHANxCO ^^"
Perhaps the custom sculptor or GSC will include her with a bunch of accessories and armaments, from guns to her time shield and maybe some pantsu hat ( ´∀`)