I also read about it:
"Producer Cameron Mackintosh announced in public that Samantha Barks will have the role of Eponine that was rumored would be going to Taylor. Playbill.com has confirmed the casting via Universal Pictures/Working Title Films. See, that’s a confirmed source. And if we don’t hear the word confirmed for a long time it will be too soon." (source: theswiftagency.com)
that's really a pity :(
