Exporter release 1.0.0b49

[rads-1996]

1.0.0b49 (2026-03-19)

Features Added

• Added a 256kb custom properties truncation limit on specific GenAI attributes
  (#45749)
• Add Browser SDK loader SDK Stats feature bit
  (#42904)

Bugs Fixed

• Exempt specific GenAI attributes values from custom properties truncation
  (#45596)
• Fix attributes override in Rate Limited Sampler
  (#45592)
• Add environment variable to disable/enable custom properties truncation
  (#45479)
• Fix io counters import issue in performance counters
  (#45286)
• Remove custom properties truncation
  (#45118)
• Fix fallback logic when connection string is provided only via environment variable
  (#45252)

Other Changes

• Change import path for LoggingHandler to accommodate upstream breaking changes -
  core and contrib
  (#45516)
• Generate exporter with TypeSpec
  (#44442)
• Generate LiveMetrics from TypeSpec
  (#44696)

[Copilot]

Pull request overview

Updates the azure-monitor-opentelemetry-exporter changelog for the 1.0.0b49 release, including finalizing the release date and ensuring key work items are captured for the release notes.

Changes:

• Mark 1.0.0b49 as released with a specific date instead of (Unreleased).
• Correct/update changelog entries and PR links for included features/fixes.
• Add TypeSpec generation items to the 1.0.0b49 notes.

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[JacksonWeber]

LGTM

[rads-1996]

/check-enforcer override

[rads-1996]

/check-enforcer override