Thanks to Postman and Lucy Pearl for this:

Emilie is going to be in ABC's 'Lost' Pilot.

Looking at the full captions of the ABC promotional pictures (coming soon to the site), two other names come up who aren't part of the regular cast.These two are Emile de Ravin (best knows as Tess on Roswell) and L. Scott Caldwell. Emile de Ravin plays a pregnant woman.

Pictures linked below.

Lost Pilot Picture 1

Lost Pilot Picture 2