Check those portals out especially your guardian. You will have to put a little extra effort and XM into recharging your portals.
My best guess is that this has 2 related intended goals:
- Increase portal turn over.
- Weaken portals quicker for the huge mass of new players to give them some opportunity to attack and claim portals in the well established game.
But no matter why or for how long this will be it is a neat new twist.
Happy Hacking ... And Recharging