Pluto is always shifting, but more slowly than most of us can notice, I think. From what I've gathered, he needs a spark to ignite a shock-wave. It is when any of the other transiting planets hit both pluto and a natal point that the circuit completes and Pluto strikes. Most likely it will be nothing that will amount to more than tiny imperceptible shifts resulting in a much improved situation down the line. It is actually pretty rare to have a full Plutonian circuit align. That rarity is why we associate him with the "axe murderer" archetype; ruler of the underworld; dark, violent and unforgiving. When he makes himself known, Pluto is terrifying and horrific.. the truth is always unsettling; but it is still truth. no matter how horrifying, it is still positive energy.