A345 addendum: On each product's page, there should be an errata document listing what changed between printings. For example, the PF1 Bestiary 3 product page includes the 1st-to-2nd printing errata document that lists the changes by page number (e.g. changing the Adaro's bite damage.)

For B2 and B3 I'm only seeing a 2nd printing for each however, not a 3rd.