What GSM middleware will "Ubuntu for phones" use?

view story

http://askubuntu.com – There are bunch of existing free software solutions for handling GSM modem in phone solutions, for instance Qtopia (maintained now by community as QtMoko), freesmartphone.org and oFono. I couldn't find any information about what Ubuntu will use on mobile phones or if it will come with something brand new. Was this decision already made? If yes, then which technology has been chosen? (HowTos)