{
  "research_date": "2026-09-11",
  "scope": "Documentary research snapshot; unknown values remain null. Not live availability or account testing.",
  "records": [
    {
      "platform": "PS4",
      "version": "13.52",
      "change": "Security corrections.",
      "release_date": null,
      "date_note": "Exact release date not supplied by the retained notes.",
      "source_id": "F03",
      "observed_at": "2026-09-11"
    },
    {
      "platform": "PS4",
      "version": "13.50",
      "change": "Interface usability.",
      "release_date": null,
      "date_note": "Exact release date not supplied by the retained notes.",
      "source_id": "F03",
      "observed_at": "2026-09-11"
    },
    {
      "platform": "PS4",
      "version": "13.04",
      "change": "Security corrections.",
      "release_date": null,
      "date_note": "Exact release date not supplied by the retained notes.",
      "source_id": "F03",
      "observed_at": "2026-09-11"
    },
    {
      "platform": "PS4",
      "version": "13.02",
      "change": "Security corrections.",
      "release_date": null,
      "date_note": "Exact release date not supplied by the retained notes.",
      "source_id": "F03",
      "observed_at": "2026-09-11"
    },
    {
      "platform": "PS4",
      "version": "13.00",
      "change": "Interface usability.",
      "release_date": null,
      "date_note": "Exact release date not supplied by the retained notes.",
      "source_id": "F03",
      "observed_at": "2026-09-11"
    },
    {
      "platform": "PS4",
      "version": "12.52",
      "change": "Security corrections.",
      "release_date": null,
      "date_note": "Exact release date not supplied by the retained notes.",
      "source_id": "F03",
      "observed_at": "2026-09-11"
    },
    {
      "platform": "PS4",
      "version": "12.50",
      "change": "Interface usability.",
      "release_date": null,
      "date_note": "Exact release date not supplied by the retained notes.",
      "source_id": "F03",
      "observed_at": "2026-09-11"
    },
    {
      "platform": "PS4",
      "version": "12.02",
      "change": "Security corrections.",
      "release_date": null,
      "date_note": "Exact release date not supplied by the retained notes.",
      "source_id": "F03",
      "observed_at": "2026-09-11"
    },
    {
      "platform": "PS4",
      "version": "12.00",
      "change": "Interface usability.",
      "release_date": null,
      "date_note": "Exact release date not supplied by the retained notes.",
      "source_id": "F03",
      "observed_at": "2026-09-11"
    },
    {
      "platform": "PS4",
      "version": "11.52",
      "change": "Security and interface maintenance.",
      "release_date": null,
      "date_note": "Exact release date not supplied by the retained notes.",
      "source_id": "F03",
      "observed_at": "2026-09-11"
    },
    {
      "platform": "PS4",
      "version": "11.50",
      "change": "Stability and interface maintenance.",
      "release_date": null,
      "date_note": "Exact release date not supplied by the retained notes.",
      "source_id": "F03",
      "observed_at": "2026-09-11"
    },
    {
      "platform": "PS4",
      "version": "11.02",
      "change": "Security, stability and interface maintenance.",
      "release_date": null,
      "date_note": "Exact release date not supplied by the retained notes.",
      "source_id": "F03",
      "observed_at": "2026-09-11"
    },
    {
      "platform": "PS4",
      "version": "11.00",
      "change": "PS App QR sign-in; message reactions.",
      "release_date": null,
      "date_note": "Exact release date not supplied by the retained notes.",
      "source_id": "F03",
      "observed_at": "2026-09-11"
    },
    {
      "platform": "PS4",
      "version": "10.50",
      "change": "Authorized apps; online friends; emoji and cross-platform indicators.",
      "release_date": null,
      "date_note": "Exact release date not supplied by the retained notes.",
      "source_id": "F03",
      "observed_at": "2026-09-11"
    },
    {
      "platform": "PS4",
      "version": "10.01",
      "change": "Performance maintenance.",
      "release_date": null,
      "date_note": "Exact release date not supplied by the retained notes.",
      "source_id": "F03",
      "observed_at": "2026-09-11"
    }
  ],
  "sources": {
    "F03": {
      "title": "PS4 retained system-software notes",
      "original_url": "https://www.playstation.com/en-us/support/hardware/ps4/system-software-info/",
      "publisher": "Sony Interactive Entertainment / PlayStation",
      "type": "Primary documentation",
      "publication_date": null,
      "accessed_at": "2026-09-11",
      "claims_supported": "15 retained PS4 version entries, 13.52 through 10.01.",
      "limitations": "Undated rolling notes; no quantified performance gains or named vulnerabilities.",
      "retrieval_status": "Read during console-update research on 2026-09-11"
    }
  }
}