Combine that with the mobile-pylon abilities of the new Phase Prisms, and Protoss Turtling becomes a completely different play style. Maybe even offensive turtling... Time to think up some crazy strategies for it.
They noted that the squads will be more capable at independence, and things like this will create some really varied ways in fighting a battle. They also said they're trying to get away with the rock-paper-scissors style of comparing units, (and thankfully no WC3 micromanagement) so strategy really will be a huge factor in every match.