Section 23 works fast: it wasn't too long ago that the company announced that they were going to go back and dub Clannad over in English, and to the delight of many they also announced that they would offer some kind of upgrade program for fans who bought the sub-only release and wanted to get the dub as well.
The details on the upgrade are now available for anyone who wants to do it. The basics are: if you bought both collections, you need to send in both sets (including the cases and sleeve art) plus $23 for the upgrade and postage-- and to Right Stuf, who is apparently handling the upgrade for S23.
That said, I'm betting most of the Clannad fans who are looking forward to the dub either didn't buy the sub-only version, or bought both collections, so hopefully there won't be many people caught in that scenario!
So, who's going for it? Or are you gonna wait until it's on the Anime Network on Thursday to try out first? Sound off!
UPDATE: Robert's Anime Corner Store reports that they will be offering the upgrade as well, details pending.