Arrow Season 4 Spoilers: Everything You Need To Know

2. Olicity

After some will they/won't they teasing over the last couple of years, not to mention a huge amount of shipping by fans online, Oliver and Felicity finally got together properly at the end of last season. 

The show will fast forward a few months, and they've been living in harmony for all that time, so we'll be seeing at least a little bit of a more domesticated and normal Oliver and Felicity. Naturally it won't stay that way for long, as they return to Star City to deal with a new threat. 

Despite that they'll still be together as a couple, which is going to add a whole new dynamic to the show, and it'll be interesting to see what impact that has on both characters and the rest of the team. The most worrying of these is Felicity, who after being rather awesome in the first two seasons was a little too much of a love interest last year, but the season 4 trailer actually seems to address those concerns directly:

Curtis: "Since when are you such a badass?"
Felicity: "Since always!"