I know the next three books focus on Savannah, and I'm very curious to see what will happen. The last few books have been slowly hinting at changes in the supernatural, and what this may mean. For example, Elena's children are the first werewolves known born of two werewolves rather than a werewolf and a human; another recent novel involved humans actually making use of magic, and there are also new species showing up - in some cases, these are old species that have remained hidden and in others they are signs of evolution. I'm definitely excited to see how this all wraps up, even if this means I have to find a new series.
It quickly turns out that there is much more going on, involving a gang of criminal werewolves. While there are a few other things going on as well, such as an odd beast like creature and another strange werewolf, this is actually one of the more straightforward recent plots. Instead the focus is on Elena as she realizes she has not worked through some of her issues and vulnerabilities. The relatively simple plot gives Elena a chance to come to terms with her past fears and begin to grasp the idea that Jeremy has chosen her as the next Alpha.