This looks like a big step in the right direction: http://www.pcworld.com/article/2027864/secure-boot-loader-now-available-to-allow-linux-to-work-on-windows-8-pcs.html#tk.nl_today
Pretty old news. Follow Matthew Garrett on this.
His blog is at http://mjg59.dreamwidth.org/
greetz
devil
nothing has been decided, currently it (simplyfied) seems to be mjg vs linus:
https://lkml.org/lkml/2013/2/21/196
and todays follow-up:
https://lkml.org/lkml/2013/2/25/369