The FAA has a PDF about itThe only age I see mentioned in the ALPA literature re the new regs is 21:
http://www.alpa.org/portals/alpa/1500Rule/PilotQualificationsSummary.pdf
The whole enchilada:
http://www.alpa.org/portals/alpa/1500Rule/
http://www.faa.gov/training_testing/testing/media/testing_matrix.pdf
Age 21 required
Edit: page three of the link