# Release 2026-q4: diff vs (first release)

## Headline counts

| | |
|---|---|
| Occupations added | 1242 |
| Occupations removed | 0 |
| Slug changes (break inbound links) | 0 |
| Tasks added / removed / text-edited | 53309 / 0 / 0 |
| Employment figures changed | 0 |
| Pay figures changed | 0 |
| Occupation scores moved | 0 |
| Prompt changed | no |
| Model changed | no |
| Cache hit rate | 63.3% (34,020 hits, 19,690 misses) |
| Estimated scoring cost this refresh | not measured |

## Stability gates

✅ No drift flag. Diff is within the pre-registered thresholds.

### M-9 canaries (spec/04 §1.6.4)

| Canary | Occupation | OccScore | Expected | |
|---|---|---|---|---|
| Paralegals and Legal Assistants | `us-soc-23-2011` | 47 | 37–67 | ✅ |
| Paralegals and Legal Assistants | `uk-soc-3520` | 56 | 37–67 | ✅ |
| Heavy and Tractor-Trailer Truck Drivers | `us-soc-53-3032` | 18 | 13–31 | ✅ |
| Heavy and Tractor-Trailer Truck Drivers | `uk-soc-8211` | 20 | 13–31 | ✅ |
| Registered Nurses | `us-soc-29-1141` | 29 | 17–53 | ✅ |
| Registered Nurses | `uk-soc-2231` | 24 | 17–53 | ✅ |

## Occupation set changes

- ➕ `us-soc-11-1011` Chief Executives
- ➕ `us-soc-11-1021` General and Operations Managers
- ➕ `us-soc-11-2011` Advertising and Promotions Managers
- ➕ `us-soc-11-2021` Marketing Managers
- ➕ `us-soc-11-2022` Sales Managers
- ➕ `us-soc-11-2032` Public Relations Managers
- ➕ `us-soc-11-2033` Fundraising Managers
- ➕ `us-soc-11-3012` Administrative Services Managers
- ➕ `us-soc-11-3013` Facilities Managers
- ➕ `us-soc-11-3021` Computer and Information Systems Managers
- ➕ `us-soc-11-3031` Financial Managers
- ➕ `us-soc-11-3051` Industrial Production Managers
- ➕ `us-soc-11-3061` Purchasing Managers
- ➕ `us-soc-11-3071` Transportation, Storage, and Distribution Managers
- ➕ `us-soc-11-3111` Compensation and Benefits Managers
- ➕ `us-soc-11-3121` Human Resources Managers
- ➕ `us-soc-11-3131` Training and Development Managers
- ➕ `us-soc-11-9013` Farmers, Ranchers, and Other Agricultural Managers
- ➕ `us-soc-11-9021` Construction Managers
- ➕ `us-soc-11-9031` Education and Childcare Administrators, Preschool and Daycare
- ➕ `us-soc-11-9032` Education Administrators, Kindergarten through Secondary
- ➕ `us-soc-11-9033` Education Administrators, Postsecondary
- ➕ `us-soc-11-9039` Education Administrators, All Other
- ➕ `us-soc-11-9041` Architectural and Engineering Managers
- ➕ `us-soc-11-9051` Food Service Managers
- ➕ `us-soc-11-9071` Gambling Managers
- ➕ `us-soc-11-9072` Entertainment and Recreation Managers, Except Gambling
- ➕ `us-soc-11-9081` Lodging Managers
- ➕ `us-soc-11-9111` Medical and Health Services Managers
- ➕ `us-soc-11-9121` Natural Sciences Managers
- ➕ `us-soc-11-9131` Postmasters and Mail Superintendents
- ➕ `us-soc-11-9141` Property, Real Estate, and Community Association Managers
- ➕ `us-soc-11-9151` Social and Community Service Managers
- ➕ `us-soc-11-9161` Emergency Management Directors
- ➕ `us-soc-11-9171` Funeral Home Managers
- ➕ `us-soc-11-9179` Personal Service Managers, All Other
- ➕ `us-soc-11-9199` Managers, All Other
- ➕ `us-soc-13-1011` Agents and Business Managers of Artists, Performers, and Athletes
- ➕ `us-soc-13-1020` Buyers and Purchasing Agents
- ➕ `us-soc-13-1031` Claims Adjusters, Examiners, and Investigators
- …and 1202 more added

## What a journalist would notice

Nothing changed. Sources hashed identical to the previous release, so every task was a cache hit and the emitted data is byte-identical. The runbook default is **not to promote**. The changelog gets a "verified current against sources" line instead, and the site's "last verified" date moves. Refresh cost: not measured of model spend, at a 63.3% cache hit rate.