Not sure if this is an error in the descriptions of the capstone enhancements, an error in the release notes, or an error in setting the prerequisites for the homunculus capstone enhancements. However, the 1st level of the capstones require either Homunculus Strength 2 or Homunculus Dexterity 2, and Artificer level 8. The Strength 2 and Dexterity 2 enhancements don't become available until lvevel 10! Either it should be Artificer level 10 required, or it should be Homunculus Strength 1 or Homunculus Dexterity 1 for 1st level of the capstone and Strength/Dexterity 2 for the 2nd level.