<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by rgm18:
no one knows???</font>
Lots of people know, and they have provided answers to most or all of the questions that you have. That was their job.
Your job is to take the time to find the information, which is for the most part either here in FlyerTalk or in Fewmiles's most excellent site.