On my F21 when HBA is on it centres the light, it's fun tuning the steering wheel a little and seeing the light follow your input, when it dips, you noticeably see the drivers side light going wide to the right to light up more of the road (as it points down as not to blind oncoming traffic) when full bean is activated again you can see the drivers side light pull in toward the centre again and so on, maybe not as smart as F30 but there is variance going on. Also says that a motorway mode is activated once you go over 68mph constant for 20 seconds but haven't had a chance to see what it does differently
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