The latest Weekly Jump scan features the main antagonist, Demigra and it also gives us some new information on the created character race strengths.
Human Race: Attack, Damage and Speed are all balanced
Saiyan Race: Great attack power and attack power rises when close to death
Frieza Clan: Main focus is Speed and Ki blasts are released from their body (most likely fingers)
Namekian Race: Great Defense and they can regenerate with their Ki
Majin Race: Great Defense and rises even more when Ki is maxed out