According to Google old feeds will stay redirected to new one. Still worth changing to remove extra steps. I've setup "my brand" feature from the start so I have to change that instead (and leaves me escape route from Feedburner just in case).

@Ryan

Yep, Feedburner belongs to Google but they recently started big show of moving from "old" Feedburner to "new" Feedburner tightly integrated with Google loging and rest of services.

Beats me why they couldn't just upgrade Feedburner in-place. Maybe Google wants to kill self-sufficient brand and make it own or whatever.

Offtopic - somewhat weird order of fields in comment form? I had almost submitted with my email in URL field

Rarst’s last blog post..Did you know Internet has an archive?