feat: add arbos 20 methods

ArbGasInfo.sol

@@ -96,4 +96,24 @@ interface ArbGasInfo {
     /// @notice Returns the available funds from L1 fees
     /// @notice Available in ArbOS version 10 and above
     function getL1FeesAvailable() external view returns (uint256);
+
+    /// @notice Returns the equilibration units parameter for L1 price adjustment algorithm
+    /// @notice Available in ArbOS version 20 and above
+    function getL1PricingEquilibrationUnits() external view returns (uint256);
+
+    /// @notice Returns the last time the L1 calldata pricer was updated.
+    /// @notice Available in ArbOS version 20 and above
+    function getLastL1PricingUpdateTime() external view returns (uint64);
+
+    /// @notice Returns the amount of L1 calldata payments due for rewards (per the L1 reward rate)
+    /// @notice Available in ArbOS version 20 and above
+    function getL1PricingFundsDueForRewards() external view returns (uint256);
+
+    /// @notice Returns the amount of L1 calldata posted since the last update.
+    /// @notice Available in ArbOS version 20 and above
+    function getL1PricingUnitsSinceUpdate() external view returns (uint64);
+
+    /// @notice Returns the L1 pricing surplus as of the last update (may be negative).
+    /// @notice Available in ArbOS version 20 and above
+    function getLastL1PricingSurplus() external view returns (int256);
 }

ArbOwner.sol

@@ -119,6 +119,12 @@ interface ArbOwner {
         int64 cost
     ) external;
 
+    /// @notice Sets the Brotli compression level used for fast compression
+    /// @notice Available in ArbOS version 20 and above
+    function setBrotliCompressionLevel(
+        uint64 level
+    ) external;
+
     /// @notice Sets the cost amortization cap in basis points
     function setAmortizedCostCapBips(
         uint64 cap

ArbOwnerPublic.sol

@@ -28,5 +28,17 @@ interface ArbOwnerPublic {
     /// @notice Get the infrastructure fee collector
     function getInfraFeeAccount() external view returns (address);
 
+    /// @notice Get the Brotli compression level used for fast compression
+    /// @notice Available in ArbOS version 20 and above
+    function getBrotliCompressionLevel() external view returns (uint64);
+
+    /// @notice Get the next scheduled ArbOS version upgrade and its activation timestamp.
+    /// @notice Returns (0, 0) if no ArbOS upgrade is scheduled.
+    /// @notice Available in ArbOS version 20 and above
+    function getScheduledUpgrade()
+        external
+        view
+        returns (uint64 arbosVersion, uint64 scheduledForTimestamp);
+
     event ChainOwnerRectified(address rectifiedOwner);
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@arbitrum/nitro-precompile-interfaces",
-  "version": "11.0.0",
+  "version": "20.0.0",
   "description": "Solidity interfaces for Arbitrum Nitro precompiled contracts",
   "author": "Offchain Labs, Inc.",
   "license": "BUSL-1.1",