Release 4.1.0

[4.1.0] - July 10, 2026

New Features

• Local Holdouts: Added support for Local Holdouts, enabling holdout experiments
  to be scoped to specific feature flag rules rather than applied globally.
  Local Holdouts let you measure the true incremental impact of individual features
  by holding out a subset of users from specific rollouts while still serving them other experiences.
  See Holdouts docs for more information.

Changed

• Don't send ODP identify event for single identifier

Bug Fixes

• Use attribute id instead of key for CMAB prediction requests
• Normalize decision event campaign_id, variation_id, and entity_id