diff --git a/package-lock.json b/package-lock.json
index 9548407..8621826 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11129,7 +11129,7 @@
     },
     "packages/events": {
       "name": "@nhsdigital/nhs-notify-event-schemas-letter-rendering",
-      "version": "1.0.0",
+      "version": "1.1.0",
       "dependencies": {
         "@asyncapi/bundler": "^0.6.4",
         "zod": "^4.1.11"
diff --git a/packages/events/package.json b/packages/events/package.json
index 3822cc7..d7da927 100644
--- a/packages/events/package.json
+++ b/packages/events/package.json
@@ -40,5 +40,5 @@
     "test:unit": "jest",
     "prepare": "npm run build"
   },
-  "version": "1.0.2"
+  "version": "1.1.0"
 }
diff --git a/packages/events/schemas/examples/letter-request.prepared.json b/packages/events/schemas/examples/letter-request.prepared.json
index 3e82d89..adaed81 100644
--- a/packages/events/schemas/examples/letter-request.prepared.json
+++ b/packages/events/schemas/examples/letter-request.prepared.json
@@ -4,16 +4,15 @@
     "clientId": "00f3b388-bbe9-41c9-9e76-052d37ee8988",
     "createdAt": "2025-08-28T08:45:00.000Z",
     "domainId": "0o5Fs0EELR0fUjHjbCnEtdUwQe4_0o5Fs0EELR0fUjHjbCnEtdUwQe5",
+    "letterVariantId": "standard_economy",
     "pageCount": 2,
     "requestId": "0o5Fs0EELR0fUjHjbCnEtdUwQe3",
     "requestItemId": "0o5Fs0EELR0fUjHjbCnEtdUwQe4",
     "requestItemPlanId": "0o5Fs0EELR0fUjHjbCnEtdUwQe5",
     "sha256Hash": "3a7bd3e2360a3d29eea436fcfb7e44c735d117c8f2f1d2d1e4f6e8f7e6e8f7e6",
-    "specificationId": "standard_economy",
     "status": "PREPARED",
     "supplierId": "supplier_123",
     "templateId": "template_123",
-    "urgency": "STANDARD",
     "url": "https://s3.eu-west-2.amazonaws.com/notify-letters-dev/letters/f47ac10b-58cc-4372-a567-0e02b2c3d479.pdf"
   },
   "datacontenttype": "application/json",
diff --git a/packages/events/src/domain/letter-request.ts b/packages/events/src/domain/letter-request.ts
index feb5ec5..017f1ce 100644
--- a/packages/events/src/domain/letter-request.ts
+++ b/packages/events/src/domain/letter-request.ts
@@ -21,10 +21,10 @@ export const $LetterRequest = DomainBase("LetterRequest")
           "Identifier for the campaign which this letter is a part of",
         examples: ["campaign-456", "flu-campaign-2025"],
       }),
-    specificationId: z.string().meta({
-      title: "Specification ID",
+    letterVariantId: z.string().meta({
+      title: "Letter Variant ID",
       description:
-        "Reference to the letter specification which should be used to produce a letter pack for this request",
+        "Reference to the letter variant which should be used to select a letter pack and supplier for this request",
       examples: ["1y3q9v1zzzz"],
     }),
     requestId: z.string().meta({
@@ -92,11 +92,6 @@ The file will be a PDF file in A4 format suitable for printing.`,
       description: "Current status of the letter request",
       examples: ["PREPARED"],
     }),
-    urgency: z.enum(["STANDARD", "URGENT"]).meta({
-      title: "Urgency",
-      description: "Indicates whether the letter is standard or urgent",
-      examples: ["STANDARD", "URGENT"],
-    }),
   })
   .meta({
     title: "Letter Request",
diff --git a/packages/events/src/events/__tests__/letter-request-prepared.test.ts b/packages/events/src/events/__tests__/letter-request-prepared.test.ts
index 7685be6..1d62f18 100644
--- a/packages/events/src/events/__tests__/letter-request-prepared.test.ts
+++ b/packages/events/src/events/__tests__/letter-request-prepared.test.ts
@@ -26,10 +26,9 @@ describe("LetterRequestPreparedEvent validations", () => {
           "https://notify.nhs.uk/cloudevents/schemas/letter-rendering/letter-request.prepared.1.0.0.schema.json",
         data: expect.objectContaining({
           domainId: "0o5Fs0EELR0fUjHjbCnEtdUwQe4_0o5Fs0EELR0fUjHjbCnEtdUwQe5",
-          specificationId: "standard_economy",
+          letterVariantId: "standard_economy",
           templateId: "template_123",
           requestId: "0o5Fs0EELR0fUjHjbCnEtdUwQe3",
-          urgency: "STANDARD",
         }),
       }),
     );
@@ -39,7 +38,7 @@ describe("LetterRequestPreparedEvent validations", () => {
     const json = readJson("letter-request-prepared-with-missing-fields.json");
 
     expect(() => $LetterRequestPreparedEvent.parse(json)).toThrow(
-      "specificationId",
+      "letterVariantId",
     );
   });
 
diff --git a/packages/events/src/events/__tests__/testData/letter-request-prepared-valid.json b/packages/events/src/events/__tests__/testData/letter-request-prepared-valid.json
index 25b4f0a..d176607 100644
--- a/packages/events/src/events/__tests__/testData/letter-request-prepared-valid.json
+++ b/packages/events/src/events/__tests__/testData/letter-request-prepared-valid.json
@@ -4,16 +4,15 @@
     "clientId": "00f3b388-bbe9-41c9-9e76-052d37ee8988",
     "createdAt": "2025-08-28T08:45:00.000Z",
     "domainId": "0o5Fs0EELR0fUjHjbCnEtdUwQe4_0o5Fs0EELR0fUjHjbCnEtdUwQe5",
+    "letterVariantId": "standard_economy",
     "pageCount": 2,
     "requestId": "0o5Fs0EELR0fUjHjbCnEtdUwQe3",
     "requestItemId": "0o5Fs0EELR0fUjHjbCnEtdUwQe4",
     "requestItemPlanId": "0o5Fs0EELR0fUjHjbCnEtdUwQe5",
     "sha256Hash": "3a7bd3e2360a3d29eea436fcfb7e44c735d117c8f2f1d2d1e4f6e8f7e6e8f7e6",
-    "specificationId": "standard_economy",
     "status": "PREPARED",
     "supplierId": "supplier_123",
     "templateId": "template_123",
-    "urgency": "STANDARD",
     "url": "https://s3.eu-west-2.amazonaws.com/notify-letters-dev/letters/f47ac10b-58cc-4372-a567-0e02b2c3d479.pdf"
   },
   "datacontenttype": "application/json",
diff --git a/packages/events/src/events/__tests__/testData/letter-request-prepared-with-invalid-major-version.json b/packages/events/src/events/__tests__/testData/letter-request-prepared-with-invalid-major-version.json
index 3e1fc8d..77eb1ed 100644
--- a/packages/events/src/events/__tests__/testData/letter-request-prepared-with-invalid-major-version.json
+++ b/packages/events/src/events/__tests__/testData/letter-request-prepared-with-invalid-major-version.json
@@ -4,16 +4,15 @@
     "clientId": "00f3b388-bbe9-41c9-9e76-052d37ee8988",
     "createdAt": "2025-08-28T08:45:00.000Z",
     "domainId": "0o5Fs0EELR0fUjHjbCnEtdUwQe4_0o5Fs0EELR0fUjHjbCnEtdUwQe5",
+    "letterVariantId": "standard_economy",
     "pageCount": 2,
     "requestId": "0o5Fs0EELR0fUjHjbCnEtdUwQe3",
     "requestItemId": "0o5Fs0EELR0fUjHjbCnEtdUwQe4",
     "requestItemPlanId": "0o5Fs0EELR0fUjHjbCnEtdUwQe5",
     "sha256Hash": "3a7bd3e2360a3d29eea436fcfb7e44c735d117c8f2f1d2d1e4f6e8f7e6e8f7e6",
-    "specificationId": "standard_economy",
     "status": "PREPARED",
     "supplierId": "supplier_123",
     "templateId": "template_123",
-    "urgency": "STANDARD",
     "url": "https://s3.eu-west-2.amazonaws.com/notify-letters-dev/letters/f47ac10b-58cc-4372-a567-0e02b2c3d479.pdf"
   },
   "datacontenttype": "application/json",
diff --git a/packages/events/src/events/__tests__/testData/letter-request-prepared-with-missing-fields.json b/packages/events/src/events/__tests__/testData/letter-request-prepared-with-missing-fields.json
index c02c524..5eac751 100644
--- a/packages/events/src/events/__tests__/testData/letter-request-prepared-with-missing-fields.json
+++ b/packages/events/src/events/__tests__/testData/letter-request-prepared-with-missing-fields.json
@@ -12,7 +12,6 @@
     "status": "PREPARED",
     "supplierId": "supplier_123",
     "templateId": "template_123",
-    "urgency": "STANDARD",
     "url": "https://s3.eu-west-2.amazonaws.com/notify-letters-dev/letters/f47ac10b-58cc-4372-a567-0e02b2c3d479.pdf"
   },
   "datacontenttype": "application/json",