Avatar: When It's Done

When I was innocently looking for the 次 airdate of Avatar, I came upon shocking news.
Not only it 発言しました the 次 アバター episode would come in July (which may be true または not), I looked down further. There I saw for one of the タイトル for the last 4 (or 5) episodes of the season, and they were titled:
Sozin's Comet, Part 1
Sozin's Comet, Part 2
Sozin's Comet, Part 3
Sozin's Comet, Part 4.
But the episodes have been coming for a long time, and ALOT of time has passed in Avatar, which should now it would mean that Summer is ending, and Sozin's Comet is coming. I know this might be bad news, and I'm just...