I've only started reading them back when PG11 was in beta and found them mostly by googling. Here's what I can find: - PG 9.6: https://www.slideshare.net/nori

I've only started reading them back when PG11 was in beta and found them mostly by googling. Here's what I can find: - PG 9.6: https://www.slideshare.net/noriyoshishinoda/postgresql-96-new-features-with-examples https://www.slideshare.net/noriyoshishinoda/postgresql-96-ne... - PG 10: https://www.hpe.com/content/dam/hpe/download/pdf/japan/linux/support/lcc/PostgreSQL_10_New_Features_en_20170522-1.pdf https://www.hpe.com/content/dam/hpe/download/pdf/japan/linux... - PG 11: https://h50146.www5.hpe.com/products/software/oe/linux/mainstream////support/lcc/pdf/PostgreSQL_11_New_Features_beta1_en_20180525-1.pdf https://h50146.www5.hpe.com/products/software/oe/linux/mains... - PG 12: https://h50146.www5.hpe.com/products/software/oe/linux/mainstream/support/lcc/pdf/PostgreSQL_12_GA_New_Features_en_20191011-1.pdf https://h50146.www5.hpe.com/products/software/oe/linux/mains... There are more, but those are in Japanese.