A month old bug with Google AdSense where you couldn't change channel names in the AdSense console has finally been fixed. Google has yet to confirm it has been fixed, but publishers are reporting in the Google AdSense Help thread that the bug is now fixed.
After about 90 comments and four weeks, the bug with updating the channel names seems to be resolved. First reports of it being fixed came in at 4:40am this morning.
So if you are a publisher dying to change the name of some of your channels, you can now do it at google.com/adsense/channels.
Forum discussion at Google AdSense Help.