v2.2.0

New Features

• Support for 'Retrieved Context Citation' in agent chat. #589 by @Yukinobu-Mine
• Support for non-text content (image, pdf, etc) in agent chat. #589 by @Yukinobu-Mine
• Support for multi-turn tool use in agent chat. #589 by @Yukinobu-Mine
• Ability to display search results from the Knowledge Base even when agents are not enabled. #589 by @Yukinobu-Mine

Bug Fixes

• Fixed an issue where bot creation with web crawling failed when specifying sites with deep nested URLs. #614 by @fsatsuki

Enhancements

• Reduced the CloudWatch log retention period from indefinite to 3 months to optimize costs. #612 by @fsatsuki, @statefb
• Enabled Lambda SnapStart, improving cold start time from 4 seconds to under 2 seconds on average. #611 by @tmokmss