This is from Brownell's description:
"The Shield 2.0 with an aggressive Grip texture for enhanced control, new crisp 2.0 trigger with a lighter trigger pull, and a tactile and audible trigger reset with an extremely thin profile & lightweight make it an excellent choice for carry. This gun can be disassembled without depressing the trigger using the M&P’s patented take-down lever design. Comes with 3-dot sight for fast target acquisition. Striker fired design ensures positive function and a consistent trigger pull."
Time to start selling those $250 Shields you bought to pick up the new one.