This is probably posted but I couldn't find it. If we previously owned the 1.0 CE and therefore do not need to repurchase the game...do we just reinstall the old 1.0 disc? or is there a place we download the new client from? If so, is it the beta client?
You don't need the old disc, as it is a whole new client. You should get an email from SE near release with download instructions. I think the beta client can be updated to full release, but not sure, so won't include a link here (if it even exists still).