Fairy is weak to Poison and Steel, resists Fighting, Dark, and Bug, and is immune to Dragon. Fairy is good against Fighting, Dragon, and Dark and resisted by Fire, Poison, and Steel. Steel also lost its resistance to Ghost and Dark.
Those are the only changes to the type chart, so yes Poison got a good buff but Ice is still pretty bad.
Generation 30: The first time you see this, copy it into your own signature (on any forum) and add one to the generation number. Social experiment.