Updated docs to new version

content/docs/guide/variables.mdx

@@ -5,14 +5,15 @@ icon: Variable
 ---
 
 ```mist
-let x = 42;                    // Type-inferred immutable
-let mut y = 10;                // Mutable variable
-i32 z = 100;                   // Explicit type annotation
-str& s = "hello";              // Typed string reference
-bool b = true;                 // Typed boolean
-f64 f = 3.14;                  // Typed float
-let (a, b) = (1, "two");      // Destructuring
-let (x, (y, z)) = (1, (2, 3)); // Nested destructuring
+let x = 42;                         // Type-inferred immutable
+let mut y = 10;                     // Mutable variable
+i32 z = 100;                        // Explicit type annotation
+str& s = "hello";                   // Typed string reference
+bool b = true;                      // Typed boolean
+f64 f = 3.14;                       // Typed float
+(i32, str&) as x, y = (1, "hello"); // Typed tuple destructuring
+let (a, b) = (1, "two");            // Destructuring
+let (x, (y, z)) = (1, (2, 3));      // Nested destructuring
 ```
 
 Variable declarations follow either of two forms:
@@ -22,6 +23,16 @@ let <pattern> [= <expr>];
 <type> <pattern> [= <expr>];
 ```
 
+### Tuple Variable Declarations
+
+Tuple variables can be declared with explicit type annotations using `as`:
+
+```mist
+(i32, bool) (x, y) as = (1, true);
+
+i32 a, b = (1, 2, 3);
+```
+
 ### Const and Static
 
 ```mist