Release notes update (#1302)

* release notes update

Author: allywhiting

docs/release-notes.mdx

@@ -19,15 +19,40 @@ We maintain a record and brief explanation of Linea Security Council transaction
 
 :::
 
+## Beta v4.4
+
+**Linea Mainnet: 3 December 2025**
+
+**Linea Sepolia: 1 December 2025**
+
+- Upgraded Linea to Fusaka (Ethereum's latest EVM upgrade), detailed in the [upgrade guide](./get-started/how-to/run-a-node/beta-v4-migration.mdx).
+
+## Beta v4.3
+
+**Linea Mainnet: 17 November 2025**
+
+**Linea Sepolia: 10 November 2025**
+
+- Upgraded to limitless prover, enabling higher throughput and lower gas fees.
+- Increased throughput to 100 Mgas/s.
+
+## Beta v4.2
+
+**Linea Mainnet: 5 November 2025**
+
+**Linea Sepolia: 31 October 2025**
+
+- Updated the burn mechanism to include LINEA tokens. Details and percentage breakdown in the [Burn Mechanism guide](./technology/burn.mdx).
+
 ## Fusaka 
 
 Linea will be implementing upgrades to bring the network into line with the latest updates to the Ethereum network, referred to as [the Fusaka upgrade](https://ethereum.org/roadmap/fusaka/).
 
 ## Beta v4.1
 
-**Linea Mainnet: 30 October, 2025**
+**Linea Mainnet: 30 October 2025**
 
-**Linea Sepolia: 30 October, 2025**
+**Linea Sepolia: 30 October 2025**
 
 - Boost prover performance by reducing proving time by 33%, supporting scaled trading, consumer, and 
 institutional use cases.