Unfortunately the manga is still in "questions" mode, as of the most recent chapter 45, although it's looking like 46 is gonna be a big answer chapter. With the pacing and episode count, and the fact that the anime is weekly while the manga is monthly, I'm a bit nervous how it's gonna be. If they decide to cliffhanger it and go for a second season, it'd have to be in a while to let manga get ahead a lot. It's not like FMAB where the manga was in clear endgame territory before the anime started airing.
Wit has done a pretty good job with it so far, production issues notwithstanding. But I think an anime-original ending could prove disastrous, and I'm not even talking about how they write it.
Also episode 9 introduced Hanji, so all is good so far. Hanji da best.
Haha boy was I wrong. More questions than answers. But 46 has some great character interactions. Even the Hulk would be like "damn that kid should relax" in regards to Eren.