Don't know if this is intentional or an error, but on p. 21 of the free rules PDF, under Determine Hit Points, it reads:
A character’s beginning hit points must be better than average. For example, if a Cleric with a 14 Constitution rolls a two for starting hit points and adds one for the Constitution modifier, the total result would be three hit points. Since this is below average (the average of a d6 roll is 3.5), the character’s hit points are then increased to four. Fighters, if their combined roll and Constitution modifier is less than eight, begin with eight hit points.
Are first-level fighters meant to start with a minimum of 8/d8 hp, or just >4.5/d8?