I think the movie would be released online by the end of this year... or perhaps earlier next year. :)

5 seasons would be a stretch. hahaha Maybe if each season has 10 episodes or so... But based on the manga, it's ideal to have 2 or 3 more seasons including the latest movie and after timeskip... But since nasimulan na ang movie, so Nekoma vs Karasuno (movie 1), Karasuno vs Kamomedai (movie 2)... then maybe timeskip movie... :)

Maybe they could also release a bonus Japan vs Argentina... it wasn't in the manga, though... just a teaser... xD