Well, Joss has said that he likes to tie up all the loose ends at the end of each season, as if it was going to be the series finale instead of the season finale. He's said that Willow will no longer be a junkie. He's also said that next year will be more like Year One.
So, the loose ends that need to be tied up are:
- Willow being all dark magicy.
- Xander's and Anya's relationship.
- Spike and Buffy.
- Warren.
We'll start with Warren. I have a feeiling that Willow will either kill him, or Buffy will save him from Willow, and he will be turned over to the police.
Spike and Buffy. I figure Spike won't be back the rest of the season. I see two futures, he gets his chip removed, continues to be a good guy over the summer, and comes back to Buffy to prove how nice of a guy he really is. *Blech* is all I have to say about that. Second future: He gets the chip removed, he returns to his evil ways, he comes back to hurt Buffy.
Xander and Anya... They'll go back to dating until they are ready to get hitched.
Willow, Willow, Willow... I think Tara is dead and will stay dead. The preview for next week made it look like whatever Power Willow was trying to bargain with wasn't accepting, which is why she goes after Warren. So, it's up to the remaining Scoobies to snap Willow out of her rampage. I expect a sappy "this isn't want Tara would want, is it?" speech that leaves Willow sobbing.
As for next season, I see Willow not having magic, ala Year One. I see Xander and Anya dating. I see Buffy without a love interest, but with a real evil to fight again, maybe Spike. Eh, I don't know what to think about Dawn. I do see a return to more lethal and evil monsters as opposed to Life being the big bad of the episode.