What does the grey arrow on the minimap mean

CD Project has commented on the save imports but nothing is confirmed yet. Anyway, here are some vague points:

• Some quest- and major decisions will be carried over according to your past choices
• Characters might react differently to Geralt depending on you completed TW1 (1)
• Importing some of the weapons and armor (2)
• It will impact the story, though not in a way that it changes it completely (2)
• It will not import your money from TW1 (2)

Parrying on lower levels works only when you are facing the enemy.

The Level 1 of the Parrying ability from the Training tree unlocks the ability to parry blows from all directions, not just the one you are facing.

Regardless of this, timing and sufficient Vigor points are prerequisites for parrying.