There were problems with alien life spans. The overlaps were too large for referee persona life spans. Regular player persona aliens can have a life span that goes from 1 year to 20000 years. However referee persona life spans can be extremely short (10 minutes) to extremely long (20M years). There are nice names for all these different types of life spans. There have been no changes made to life stages.
The updated alien referee persona life spans is live at Alien RP Life Spans
Updating the persona generator is underway.