You now have an option to modify instance types and weights for a running EC2 Fleet or Spot Fleet (referred to further as fleet). You can replace an entire launch template configuration specifying new instance types, weights, and other parameters without deleting and re-creating a fleet.
Amazon Aurora PostgreSQL-Compatible Edition adds support for the pg_bigm extension. pg_bigm extension provides full text search capability in PostgreSQL. This extension allows a user to create 2-gram (bigram) index for faster full text search.