diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7fc42d7..92e7d93 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,9 +3,10 @@
 * 2.5.next in progress
   * Address [#523](https://github.com/seancorfield/honeysql/issues/523) by expanding examples in README **Functions** to show aliases.
   * Address [#522](https://github.com/seancorfield/honeysql/issues/522) by supporting metadata on table specifications in `:from` and `:join` clauses to provide index hints (SQL Server).
+  * Address [#521](https://github.com/seancorfield/honeysql/issues/521) by adding initial experimental support for an XTDB dialect.
   * Address [#520](https://github.com/seancorfield/honeysql/issues/520) by expanding how `:inline` works, to support a sequence of arguments.
   * Fix [#518](https://github.com/seancorfield/honeysql/issues/518) by moving temporal clause before alias.
-  * Address [#495](https://github.com/seancorfield/honeysql/issues/495) by adding (experimental) `format&` and `formatv` macros (`.clj` only!) -- purely for discussion: may be removed in a subsequent release!
+  * Address [#495](https://github.com/seancorfield/honeysql/issues/495) by adding (experimental) `formatv` macro (`.clj` only!) -- purely for discussion: may be removed in a subsequent release!
   * Implemented `CREATE INDEX` [#348](https://github.com/seancorfield/honeysql/issues/348) via PR [#517](https://github.com/seancorfield/honeysql/pull/517) [@dancek](https://github.com/dancek).
   * Mention `:not-in` explicitly in the documentation.
   * Code cleanup per `clj-kondo`.
diff --git a/src/honey/sql.cljc b/src/honey/sql.cljc
index 801291e..f096f04 100644
--- a/src/honey/sql.cljc
+++ b/src/honey/sql.cljc
@@ -2108,21 +2108,6 @@
   [dsl & params]
   (format dsl {:params (zipmap (map (comp keyword str inc) (range)) params)}))
 
-#?(:clj
-   (defmacro format&
-     "Experimental implementation of https://github.com/seancorfield/honeysql/issues/495
-
-      Implicitly treats any locally bound symbol as a variable to be substituted
-      in the symbolic SQL expression.
-
-      (let [x 42 y 13]
-        (format& '{select * from table where (= x y)}))
-
-      => SELECT * FROM table WHERE (42 = 13)"
-     [dsl & opts]
-     (let [syms (vec (keys &env))]
-       `(honey.sql/format (clojure.template/apply-template '~syms ~dsl ~syms) ~@opts))))
-
 #?(:clj
    (defmacro formatv
      "Experimental implementation of https://github.com/seancorfield/honeysql/issues/495