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Heroku is keeping every runtime fresh and quietly extending its inference catalogue with Claude Opus 4.7.

paas-maintenanceruntime-updatesheroku-aimodel-integrationbuildpacks
◆Current state
Heroku's recent activity is the steady drumbeat of a managed PaaS: stack image refreshes (Heroku-22 and Heroku-24), routine .NET SDK updates across the 8/9/10 lines, Python buildpack bumps for Pipenv/Poetry/uv, Go 1.25.9 and 1.26.2 enablement, and a JRuby update. The one platform-level move is that Heroku AI inference now supports Claude Opus 4.7 alongside the existing model lineup.
◆Where it's heading
Heroku is in disciplined-maintenance mode for the core PaaS — every supported language gets timely upstream version coverage, and the stack images stay patched. The interesting under-the-radar push is around AI: the documentation surface now includes Inference API, AI Models, Tool Use, Vector Database, and AI Integrations, suggesting Heroku has been steadily building an AI inference platform on top of the dyno foundation rather than just shipping runtime bumps.
◆Prediction
Expect more frontier-model additions to Heroku AI on a roughly biweekly cadence, plus expanded vector-database and tool-use docs as customers actually start building agent workflows. On the platform side, watch for a Heroku-26 stack preview as the multi-year stack lifecycle continues — and continued Python tooling refresh as uv displaces Pipenv in popularity.

◆Recent moves

  1. 2mo ago

    Heroku-22 and Heroku-24 stacks updated

    Heroku-22 and Heroku-24 stack images get a security and package refresh. Routine for a managed PaaS but customer-visible since dynos rebuild against the new image on next deploy.

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  2. 2mo ago

    .NET SDK 10.0.107 and 10.0.203 are now available

    .NET SDK 10.0.107 and 10.0.203 land on Heroku, following the broader 8/9/10 batch update from a week earlier. Same-week-as-upstream coverage that .NET shops on Heroku will care about for compliance and CVE remediation.

    View source ↗
  3. 2mo ago

    Heroku AI now supports Claude Opus 4.7

    Heroku AI inference now exposes Claude Opus 4.7 alongside its existing model catalogue. Continues the pattern of Heroku tracking frontier-model availability, signaling the inference offering is being maintained as a serious product surface rather than a side project.

    View source ↗
  4. 2mo ago

    .NET SDK 8.0.126, 8.0.420, 9.0.116, 9.0.313, 10.0.106 and 10.0.202 are now available

    Bulk .NET SDK availability across 8.0.126, 8.0.420, 9.0.116, 9.0.313, 10.0.106, and 10.0.202. Coordinated upstream-tracking that keeps every supported .NET line current — the kind of plumbing that justifies the managed PaaS premium for enterprise .NET workloads.

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  5. 2mo ago

    New --start-cmd flag in heroku local command Python buildpacks updated to Pipenv 2026.5.2, Poetry 2.3.4 and uv 0.11.6

    Two unrelated changes bundled: a new --start-cmd flag for heroku local that gives developers cleaner dev-loop control, and Python buildpack bumps to Pipenv 2026.5.2, Poetry 2.3.4, and uv. Modest but the CLI flag is a real ergonomics win for local debugging.

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  6. 2mo ago

    Go 1.25.9 and 1.26.2 are now available Heroku-22 and Heroku-24 stacks updated JRuby version 10.0.5.0 is now available

    Combined drop with Go 1.25.9 and 1.26.2 availability, another stack refresh, and JRuby 10.0.5.0. Three supported runtimes refreshed in one announcement — typical of the cadence that defines Heroku platform maintenance.

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