Google, Facebook, Microsoft & Apple These Companies Known For Their Innovation.
So It's Obvious Google Upgrade Themselves On Daily Basis.
I don't expecting something big like penguin, panda, hummingbird in this year.
SEO Cost Already Increased Due To Google Updates Just Focus On Quality SEO
They change their stuff on a daily basis almost.
Some changes are tiny, the bigger ones they notify about such as Panda , Penguin and the rest of them.