rlsnotes40 Add short list of most important changes in FB4 to "New In…

… Firebird 4.0"

src/docs/asciidoc/en/rlsnotes/rlsnotes40/_new-features-40.adoc

@@ -4,6 +4,24 @@
 [[rnfb40-new-sumry]]
 == Summary of New Features
 
+Firebird 4.0 introduces new data types and many improvements without radical changes in architecture or operation, the most important are:
+
+- Built-in logical replication;
+- Extended length of metadata identifiers (up to 63 characters);
+- Decimal floating points (`DECFLOAT`);
+- Increased maximum precision of `NUMERIC` and `DECIMAL` to 38 digits;
+- Introduction of `INT128` (128-bit integer);
+- Time zone support (`TIME WITH TIME ZONE`, `TIMESTAMP WITH TIME ZONE`);
+- Lateral derived tables;
+- Configurable time-outs for connections and statements;
+- Pooling of external connections;
+- Batch operations in the API;
+- Built-in functions for encryption and cryptographic hashes;
+- Built-in functions for encoding and decoding Base64 and hex;
+- Extensive system privileges and ability to assign automatic roles;
+- Engine and database configuration (read-only) exposed through virtual table `RDB$CONFIG`;
+- Maximum page size increased to 32KB.
+
 The following list summarises the features and changes, with links to the chapters and topics where more detailed information can be found.
 
 [[rnfb40-new-complete]]