Whats the betting it will have new merchandisable chracters, that will be merchandised to death, to me it looks another excuse to make more cash out of Star Wars. and it will more than likely complicate the Story more than it is now and would Mcgregor (who would be needed if Obi Wan is to appear or will they get someone else) or say a Mcdiarmid actually appear.
My final word...
Mr Lucas please move on from Star Wars and do something else