Thanks for posting the link to that - I'd been looking earlier and found nothing but dead links. It sounds like they've done a good job of restructuring this whole conversation to conform to ROTS story points while still working with Vader's previous mentions of Skywalker on Hoth. Coolness.
The Emperor's dialog is a little slow and out of his normal cadence, but hey, its one changed I've actually wanted for a long time.
What really impresses me is Vader's new "how is that possible?" line, which, if its not a recent recording, is a lot better than the crap "alert my Star Destroyer to prepare for my arrival" take they dug up for Bespin (which was apparently from old 1980's VO sessions). Hopefully they've addressed that as well with recent JEJ session takes.
This surfaced as well:
EDIT: Hard to believe English is my native language.