code change · obsoletionCopilot & Agentsofficial - Microsoftreviewed - checked by Opus

#11375 Obsolete GPT-5.5 chat and add GPT-5.6 Ceres deployments

GPT-5.5 chat deployment getters in AOAI Deployments are marked obsolete because those deployments retire on 11 September 2026. New GPT-5.6 Ceres latest and preview getters are added, and Sales Order Agent attachment extraction and item search now use them.

Pull request · merged into main (BC30) on 2026-09-23 by darjoo · 8 files (+162 -8), 6 AL · obsoletion · tier official · reviewed (checked by Opus)

What changed

  • GetGPT55ChatLatest() and GetGPT55ChatPreview() methods marked obsolete in version 30.0 with retirement telemetry
  • New GetGPT56CeresLatest() and GetGPT56CeresPreview() methods added returning gpt-56-ceres deployment models
  • Sales Order Agent attachment extraction and item search callers migrated to GPT-5.6 Ceres deployments
  • GPT-5.5 preview retained for file-content compatibility until cleanup, GPT-5.6 preview enabled for file-content messages
  • Five AL tests added covering deployment names, obsolete method retention, file-content preview support, and unsupported model rejection
  • Behaviour changes for users or extensions.

AL objects touched

Obsoletions

  • AOAI Deployments: GetGPT55ChatLatest(), replaced by GetGPT56CeresLatest()
  • AOAI Deployments: GetGPT55ChatPreview(), replaced by GetGPT56CeresPreview()

Also merged into

  • #11772 into releases/29.x on 2026-09-30

Context

  • Work items: AB#650712
  • Labels: AL: Apps (W1), AL: System Application, Ownership: Needs Review, Team: Other
  • Systems: copilot, development

Source: metadata of a merged pull request in microsoft/BCApps (bcapps): title, labels, changed paths and counts, with a summary in our words. No source text and no description beyond one short quote (D10, D61).