Merge branch 'main' of https://github.com/0xPolygon/polygon-docs into km/cdk-sharon-updates

Author: kmurphypolygon

docs/img/learn/agglayer-2.png

@@ -31,12 +31,20 @@ hide:
 </div>
 <div class="grid-container">
    <div class="grid-item">
-      <a href="./liquidity-and-scalability">
+      <a href="./agglayer">
          <div class="product-list-item-header">
-            <div class="feature-card-heading">Liquidity and scalability</div>
+            <div class="feature-card-heading">Polygon AggLayer</div>
          </div>
          <p class="feature-paragraph">ZK-powered L2s to unify liquidity across ecosystem and scale on demand.</p>
       </a>
+   </div>
+   <div class="grid-item">
+      <a href="../cdk/architecture/type-1-prover/intro-t1-prover">
+         <div class="product-list-item-header">
+            <div class="feature-card-heading">Polygon Type 1 Prover</div>
+         </div>
+         <p class="feature-paragraph">Driven by innovation, the Polygon Type 1 Prover is fully Ethereum equivalent.</p>
+      </a>
    </div>
     <div class="grid-item">
       <a href="./polygon-protocols">
@@ -46,7 +54,15 @@ hide:
          <p class="feature-paragraph">Widely-adopted EVM-compatible sidechain designed for low transaction costs and fast transaction times.</p>
       </a>
    </div>
-         <div class="grid-item">
+   <div class="grid-item">
+      <a href="./welcome">
+         <div class="product-list-item-header">
+            <div class="feature-card-heading">Welcome to Polygon innovation and design</div>
+         </div>
+         <p class="feature-paragraph">Find out what to expect from the Polygon Knowledge Layer Learn section.</p>
+      </a>
+   </div>
+   <div class="grid-item">
       <a href="./deep-dive-arch">
          <div class="product-list-item-header">
             <div class="feature-card-heading">Deep dive into the architecture</div>

docs/img/learn/agglayer-3.png

@@ -3,6 +3,23 @@ Find in here a record of the zkEVM’s historical data. This document records ti
 Join discussions or ask questions on Telegram: https://t.me/polygonzkevm_technical_updates/31 
 
 
+
+### 12th Feb, 2024
+
+**zkEVM mainnet Upgrade: Etrog hardfork**
+
+This upgrade brings the Polygon zkEVM to being almost a type 2 ZK-EVM. See further details [here](../architecture/protocol/etrog-upgrade.md)
+
+|                 |                           Version                            |
+| :-------------: | :----------------------------------------------------------: |
+|      Node       |                            v0.5.6                            |
+|     Prover      |                            v4.0.4                            |
+|     Bridge      |                            v0.4.0                            |
+| Change logs url | https://github.com/0xPolygonHermez/zkevm-node/releases/tag/v0.5.7 |
+| Supported ForkIDs | Mainnet & Cardona: ForkIDs 4, 5, 6 & 7.  Testnet (Goerli): ForkIDs 1, 2, 3, 4, 5 & 6. |
+
+
+
 ### 13th Dec, 2023
 
 **zkEVM mainnet update**

docs/img/learn/agglayer-4.png

@@ -8,7 +8,8 @@ Add the Polygon zkEVM network of your choice to your wallet by navigating to the
 | Network | RPC URL | ChainID | Block Explorer URL | Currency |
 | ------- | ------------------------------- | ---------------- | ---------------- | ----- |
 | Polygon zkEVM | `https://zkevm-rpc.com` | `1101` | `https://zkevm.polygonscan.com/` | **ETH** |
-| zkEVM Testnet | `https://rpc.public.zkevm-test.net` | `1442` | `https://testnet-zkevm.polygonscan.com` | **ETH** |
+| Cardona Testnet | `https://rpc.cardona.zkevm-rpc.com` | `2442` | `https://cardona-zkevm.polygonscan.com/` | **ETH** |
+| zkEVM Testnet (Deprecating soon!) | `https://rpc.public.zkevm-test.net` | `1442` | `https://testnet-zkevm.polygonscan.com` | **ETH** |
 
 Here is a video tutorial on how to add Polygon zkEVM Testnet to MetaMask and deploy smart contracts:
 

docs/img/learn/agglayer-5.png

@@ -133,9 +133,11 @@ nav:
         - Verify a contract: zkEVM/how-to/verify-contract.md
       - Architecture:
         - Architecture: zkEVM/architecture/index.md
+        - Upgrades:
+          - Etrog upgrade: zkEVM/architecture/protocol/etrog-upgrade.md
         - zkEVM protocol:
           - zkEVM protocol: zkEVM/architecture/protocol/index.md
-          - Etrog upgrade: zkEVM/architecture/protocol/etrog-upgrade.md
+          
           - State management: zkEVM/architecture/protocol/state-management.md
           - Transaction life cycle:
             - Submit transactions: zkEVM/architecture/protocol/transaction-life-cycle/submit-transaction.md
@@ -572,7 +574,7 @@ nav:
   - Learn:
       - Learn: learn/index.md
       - Welcome: learn/welcome.md
-      - Unified liquidity and scalability: learn/liquidity-and-scalability.md
+      - Polygon AggLayer: learn/agglayer.md
       - Polygon protocols: learn/polygon-protocols.md
       - Polygon 2.0 architecture: learn/deep-dive-arch.md