docs: add gnfd altai upgrade

docs/announce/altai-gnfd.md

@@ -0,0 +1,30 @@
+# Altai Upgrade of Greenfield
+
+<div class="doc-announce-info">
+    <span class="version-tag">Hardfork</span>
+</div>
+
+
+## Upgrade Timeline
+
+- Testnet: Sep 21th 2024 06:00:00 AM UTC Blockheight: 12,513,708
+
+- Mainnet: Sep 23th 2024 06:00:00 AM UTC Blockheight: 11,917,971
+
+
+For Validators: greenfield [v1.9.1](https://github.com/bnb-chain/greenfield/releases/tag/v1.9.1?ref=bnbchain.ghost.io)
+
+For SP: no action needed.
+
+
+## Hot Fix Release
+Greenfield and the Metamask extension are facing compatibility issues, affecting some functionalities such as bucket creation on Dcellar.
+This issue is occurring because the MetaMask Extension recently upgraded its middleware library to the latest version, 
+implementing stricter EIP712 signature verification rules.
+
+This release contains the hotfix to resolve this issue, all dapps that using the go-sdk and js-sdk is suggested to upgrade to the 
+latest version.
+
+- [Go-SDK v1.7.3](https://github.com/bnb-chain/greenfield-go-sdk/releases/tag/v1.7.3)
+- [Js-SDK v2.2.0-alpha](https://github.com/bnb-chain/greenfield-js-sdk/releases/tag/%40bnb-chain%2Fgreenfield-js-sdk%402.2.0-alpha.0)
+

docs/announce/index.md

@@ -2,19 +2,12 @@
 # Announcement
 
 <div class="doc-announce">
-    <a href="./fjord-opbnb/">
+    <a href="./altai-gnfd/">
         <div>
-            <div class="announce-title">Fjord Upgrade of opBNB (Testnet)</div>
-            <div class="announce-desc">Introduce L1 Fee Calculation Changes on opBNB Testnet</div>
+            <div class="announce-title">Altai Upgrade of Greenfield </div>
+            <div class="announce-desc">A hotfix release to address Metamask compatibility issue</div>
         </div>
-        <span class="announce-date">2024 Sep 10</span>
-    </a>
-    <a href="./fjord-opbnb/">
-        <div>
-            <div class="announce-title">Fjord Upgrade of opBNB (Mainnet)</div>
-            <div class="announce-desc">Introduce L1 Fee Calculation Changes on opBNB Mainnet</div>
-        </div>
-        <span class="announce-date">2024 Sep 24</span>
+        <span class="announce-date">2024 Sep 23</span>
     </a>
     <a href="./bohr-bsc/">
         <div>

mkdocs.yml

@@ -63,8 +63,10 @@ nav:
     - Announcements: ./announce/index.md
     - Upcoming:
       - Bohr Hardfork(BSC): ./announce/bohr-bsc.md
-      - Fjord Hardfork(opBNB): ./announce/fjord-opbnb.md
+      - Altai Hardfork(Gnfd): ./announce/altai-gnfd.md
+
     - Passed:
+      - Fjord Hardfork(opBNB): ./announce/fjord-opbnb.md
       - Wright Hardfork(opBNB): ./announce/wright-opbnb.md
       - Mongolian Hardfork(Greenfield): ./announce/mongolian-greenfield.md
       - Veld Hardfork(Greenfield): ./announce/veld-greenfield.md