Add Section 4.10 entry to the PER-CS 2.0 to 3.0 migration guide

migration-3.0.md

@@ -129,6 +129,30 @@ class Example
 }
 ```
 
+## [Section 4.10 - Interface and abstract properties](https://www.php-fig.org/per/coding-style/#410-interface-and-abstract-properties)
+
+This is a new section about interface and abstract properties, as per the link above. Examples follow:
+
+```php
+abstract class Example {
+    abstract public string $name {
+        get => ucfirst($this->name);
+        set;
+    }
+}
+```
+
+```php
+interface Example
+{
+    public string $readable { get; }
+
+    public string $writeable { set; }
+
+    public string $both { get; set; }
+}
+```
+
 ## [Section 5.2 - Switch, Case, and Match](https://www.php-fig.org/per/coding-style/#52-switch-case-match)
 
 When breaking a series of boolean operators across multiple lines, the operator MUST be at the beginning of each line, not the end of each line.