QUESTION

yes

because was there always that blue button ive never seen it before

Actually when it was still not updated you can upload at that time but the process was a little long and a bit complicated unlike now that you upload the pics directly in the site and you can edit it and it uploads immediately

I know cuz I upload chapters before but now I only update sometimes, I've been busy with school

it was always like that, they just added the feature to simplify it