docs: update CHANGELOG with '2517.0' distribution

Author: jpraynaud

CHANGELOG.md

@@ -9,17 +9,26 @@ As a minor extension, we have adopted a slightly different versioning convention
 
 ## Mithril Distribution [XXXX] - UNRELEASED
 
-- **BREAKING** changes in Mithril client CLI:
+- Crates versions:
+
+| Crate | Version |
+| ----- | ------- |
+| N/A   | `-`     |
+
+## Mithril Distribution [2517.0] - UNRELEASED
+
+- **BREAKING** changes in Mithril client CLI and library:
 
   - To fast bootstrap a Cardano node, the new `--include-ancillary` option has been added to the _Cardano node database_ command in the Mithril client CLI.
-  - Without this option, only final immutable files are downloaded and the ledger state must be computed from the genesis block.
+  - Without this option, only final immutable files are downloaded, and the ledger state must be computed from the genesis block when the Cardano node starts.
   - The `--include-ancillary` option requires the usage of an **ancillary verification key** (`--ancillary-verification-key` or `ANCILLARY_VERIFICATION_KEY`) which is specified in the [Networks configuration](https://mithril.network/doc/manual/getting-started/network-configurations) page.
+  - Clients from distribution [`2513`](#mithril-distribution-25130---2025-03-28) and earlier are **not compatible** with this change and **must be updated**.
 
 - Support for `Cardano node` `10.3.1` in the signer and the aggregator.
 
 - Support for ancillary files signature for _Cardano node database_ and _Cardano node database v2_ certification with IOG key.
 
-- Add `with_origin_tag` function to the Mithril client library to record the origin of client requests.
+- Support for origin tags in Mithril client library, CLI and WASM to record the origin of client requests.
 
 - **UNSTABLE** implement support for leader/follower registration in the infrastructure.