Update warning in migration docs, now that 26.04 is released

Author: ewels

docs/migrations/26-04.md

@@ -2,11 +2,7 @@
 
 # Migrating to 26.04 (preview)
 
-This page summarizes the upcoming changes in Nextflow 26.04, which will be released in April 2026.
-
-:::{note}
-This page is a work in progress and will be updated as features are finalized. It should not be considered complete until the 26.04 release.
-:::
+This page summarizes the changes in Nextflow 26.04, [released](https://github.com/nextflow-io/nextflow/releases/tag/v26.04.0) April 29th 2026.
 
 ## New features
 
@@ -164,15 +160,15 @@ Breaking changes from the {ref}`first preview <static-typing-first-preview>`:
 
 - The syntax for process tuple inputs has been updated:
 
-  ```nextflow
-  // 25.10
-  input:
-  (id, fastq_1, fastq_2): Tuple<String,Path,Path>
+    ```nextflow
+    // 25.10
+    input:
+    (id, fastq_1, fastq_2): Tuple<String,Path,Path>
 
-  // 26.04
-  input:
-  tuple(id: String, fastq_1: Path, fastq_2: Path)
-  ```
+    // 26.04
+    input:
+    tuple(id: String, fastq_1: Path, fastq_2: Path)
+    ```
 
 - The method signature for the `stageAs` directive was changed from `(filePattern, value)` to `(value, filePattern)`.