Just to clarify, this is where I've seen "auto" referred to:
SOURCE:
Twitter
Definitely sounds like the new shielding is automatic to me!
Personally, I'm fine with it - more control is all well and good, but there's a fine line. Once you have to remember to hold down a shield button so that the opponent doesn't just ceaselessly smash the ball off you every time by holding down "pressure" (and it's very easy to win the ball in PES), I'm of the belief that there's DEFINITELY no harm in it being automatic when it's something so instinctive to any footballer (though it'd be nice if it was linked to the attributes).
Total control sounds like a dream, until it becomes more like landing a plane than telling a bloke to smack his foot into a ball...
For my money, the tactics should be complicated, but the controls definitely shouldn't be. (How kids do tricks in FIFA I'll never know, it's like trying to crack a safe in the middle of a football match.)