The way each section is specifically called out in the blue post, though, followed by 'more will be available each week' heavily implies that it'll be 1 section a week for X weeks though. The only thing I'm unsure of is if the defense of Dalaran and the summoning of Alodi is considered one section or two. I'm betting two but it could be just one I guess maybe. Just another reason to use the Oxford comma, kids!