specs: rename Eclipse to Ecotone

specs/superchain-upgrades.md

@@ -34,7 +34,7 @@ chains following the same Superchain Target upgrade synchronously.
   - [Regolith](#regolith)
 - [Canyon](#canyon)
 - [Delta](#delta)
-- [Eclipse](#eclipse)
+- [Ecotone](#ecotone)
 - [Fjord](#fjord)
 
 <!-- END doctoc generated TOC please keep comment here to allow auto update -->
@@ -252,7 +252,7 @@ but the matching L1-origin information may not be present at the time of activat
 - `v4.0.0`: TBD - Canyon.
   [Governance proposal](https://gov.optimism.io/t/final-upgrade-proposal-2-canyon-network-upgrade/7088).
 - `v5.0.0-1`: Delta - Experimental, devnet pre-release stage.
-- `v6.0.0-1`: Eclipse - Very experimental, in development.
+- `v6.0.0-1`: Ecotone - Very experimental, in development.
 
 ## Post-Bedrock Network upgrades
 
@@ -309,19 +309,19 @@ The Delta upgrade consists of a single consensus-layer feature: [Span Batches](.
 
 The Delta upgrade uses a *L2 block-timestamp* activation-rule, and is specified only in the rollup-node (`delta_time`).
 
-## Eclipse
+## Ecotone
 
-The Eclipse upgrade contains the Dencun upgrade from L1, and adopts EIP-4844 blobs for data-availability.
+The Ecotone upgrade contains the Dencun upgrade from L1, and adopts EIP-4844 blobs for data-availability.
 
 Dencun Upgrade:
 
 - Cancun (Execution Layer):
   - [EIP-1153: Transient storage opcodes](https://eips.ethereum.org/EIPS/eip-1153)
   - [EIP-4844: Shard Blob Transactions](https://eips.ethereum.org/EIPS/eip-4844)
-    - [Blob transactions are disabled](./exec-engine.md#eclipse-disable-blob-transactions)
+    - [Blob transactions are disabled](./exec-engine.md#ecotone-disable-blob-transactions)
   - [EIP-4788: Beacon block root in the EVM](https://eips.ethereum.org/EIPS/eip-4788)
-    - [The L1 beacon block root is embedded into L2](./exec-engine.md#eclipse-beacon-block-root)
-    - [The Beacon roots contract deployment is automated](./derivation.md#eclipse-beacon-block-roots-contract-deployment-eip-4788)
+    - [The L1 beacon block root is embedded into L2](./exec-engine.md#ecotone-beacon-block-root)
+    - [The Beacon roots contract deployment is automated](./derivation.md#ecotone-beacon-block-roots-contract-deployment-eip-4788)
   - [EIP-5656: MCOPY - Memory copying instruction](https://eips.ethereum.org/EIPS/eip-5656)
   - [EIP-6780: SELFDESTRUCT only in same transaction](https://eips.ethereum.org/EIPS/eip-6780)
   - [EIP-7516: BLOBBASEFEE opcode](https://eips.ethereum.org/EIPS/eip-7516)
@@ -332,12 +332,12 @@ Dencun Upgrade:
 
 Data Availability (DA) upgrade:
 
-- Blobs Data Availability: support blobs DA the [L1 Data-retrieval stage](./derivation.md#eclipse-blob-retrieval).
+- Blobs Data Availability: support blobs DA the [L1 Data-retrieval stage](./derivation.md#ecotone-blob-retrieval).
 - Rollup fee update: support blobs DA in
-  [L1 Data Fee computation](./exec-engine.md#eclipse-l1-cost-fee-changes-eip-4844-da)
-- Auto-upgrading and extension of the [L1 Attributes Predeployed Contract](./deposits.md#eclipse-l1block-upgrade)
+  [L1 Data Fee computation](./exec-engine.md#ecotone-l1-cost-fee-changes-eip-4844-da)
+- Auto-upgrading and extension of the [L1 Attributes Predeployed Contract](./deposits.md#ecotone-l1block-upgrade)
   (also known as `L1Block` predeploy)
 
 ## Fjord
 
-Name of the next upgrade after Eclipse. Placeholder for development coordination.
+Name of the next upgrade after Ecotone. Placeholder for development coordination.