Implementing Exact Tensor Network method for default.tensor

doc/releases/changelog-dev.md

@@ -4,6 +4,9 @@
 
 <h3>New features since last release</h3>
 
+* The `default.tensor` device now supports the `tn` method to simulate quantum circuits using exact tensor networks.
+  [(#5786)](https://github.com/PennyLaneAI/pennylane/pull/5786)
+
 * QROM template is added. This template allows you to enter classic data in the form of bitstrings.
   [(#5688)](https://github.com/PennyLaneAI/pennylane/pull/5688)
 
@@ -44,10 +47,9 @@
     Use `mcm_method="deferred"` to use the deferred measurements principle, or `mcm_method="one-shot"`
     to execute once for each shot.
 
-* The `default.tensor` device is introduced to perform tensor network simulation of a quantum circuit.
+* The `default.tensor` device is introduced to perform tensor network simulations of quantum circuits using the `mps` (Matrix Product State) method.
   [(#5699)](https://github.com/PennyLaneAI/pennylane/pull/5699)
 
-
 <h3>Improvements 🛠</h3>
 
 * The wires for the `default.tensor` device are selected at runtime if they are not provided by user.