Being Human takes place in the Anita Blake universe.
Nora will not become a werewolf. Even though she revealed a scratch from Josh in the finale, she was also several months pregnant with a werewolf-human hybrid. This could have caused some sort of supernatural immunity to whatever causes werewolf contamination. However, season 2 will have werewolves trying to capture her in order to create a cure for themselves.
Josh will effectively become the leader of the first wolf pack.His research into werewolves combined with his de facto alliance with Aidan will get out among other wolves and vampires. This in turn will cause ripples through said communities (or lack thereof for the wolves) and may very well end up being the wild card force that allows Aidan to 'prove' he is the right one to lead Boston. And over all, this will allow the show to develop more drama for Nora and Josh - intra-pack politics, leadership responsibilities, but also organizational drama between Aidan and Josh.
Josh is (currently) an Omega.
Sally will become a reaper.
Josh will break the curse by (accidentally) killing Ray but circumstances will require him to become a werewolf if he wants to save his friends and family.And Nora will be the one to curse him again.
The twin's father will be the one to reset the status quo for the group.He'll release Nora on a full moon in order to 'recruit' her wolf into joining his crusade against Aidan. Aidan of course doesn't want to kill Nora but has to deal with the father. Josh and Sally try to reason with Nora and it will sort of work: Nora will kill Sally and attack Josh which will be enough to snap her wolf out of it. This will result in Sally becoming a ghost again and Josh becoming a wolf again.
Aiden will turn Sally into a vampire in order to save her.That'd be another way to return to some part of status quo.
Sally didn't return as a human.She's not a zombie or a vampire, but more like a succubus. This is teased at in season 3 x 2 where someone she's close with feels 'funny'.
Ray will return as a kind of zombie werewolf under the control of Donna.He's also the werewolf in the teases with the messed up head.
Cat will turn out to be Aiden's descendantMaking the potential relationship uber weird but it might also mean that her blood will somehow cure Aiden of the virus
Bubble Boy's actor was chosen for his resemblance to Henry....And that will become an important point.
Nora doesn't want to get married to Josh because she's worried that their child, being a pure-bred werewolf would turn out like the twins and Liam.Above and beyond the uncharted (for them) territory of raising a child, much less raising a werewolf child, it seems like a legitimate concern that she might want not to see a child of hers become the monsters that the Mc Lean clan was/is.
A new character will join the main cast: Zoe will return as a ghostIn an upcoming episode preview Josh makes an offhand comment about how easy/commonplace it's becoming for the group to bury/recover bodies. Considering how the March 11th episode ends it may not be a huge stretch when you consider how bad her chances of getting out of her situation with Nick are.
Cat is a descendant of Bishop, Henry, Suren, or heck... Mother.'cause that's just the sort of messed up situation the show tends to do.
Cat is a descendant of Aiden.'cause... that'd be even more messed up.
Josh is stuck as a wolfwere because he cured himself.Basically, he 'killed' his wolf by curing himself. So upon re-cursing, his wolf is now completely terrified (and maybe a little pissed) that Josh will try to kill him again and thus exerting total control as much as possible. The fact that Josh is now back to completely hating himself and his wolf make things worse. Only when he comes to terms with his wolf (and himself) again will he be able to integrate both halves of himself and become human again.