CSPAN2 and CSPAN3 are in Clear QAM this afternoon. They were added late this morning or early this afternoon.
CSPAN2 is 116-3 at 720x480i (4:3)
CSPAN3 is 116-4 at 720x480i (4:3)
As to the Charter boxes, I am going to check and see when the new channels become active and post a reply back about the new HD channels.
Also, Zap2It is not currently listing CSPAN2/3 yet in the listings. (this usually takes 1-7 days)
As of this morning, the new HD channels are active in the digital boxes and the analog channel moves and deletes have been made.