User blog comment:Jademing/Ask Oda!/@comment-3060121-20120319020717/@comment-5002959-20120319030220

the answer to your first question is:

No. The eleven supernova's are eleven rookie pirates with a bounty over 100 million, who were at Sabody Archepligo at the same time. There were only eleven supernova's and the name does not change.