Updating-and-release-notes.md

-### Current version: `3.0.1b17`
+### Current version: `3.0.1b18`
 
 You can check the version installed by running `obi --version`
 
@@ -21,6 +21,9 @@ python3 setup.py install
 
 ### Release notes:
 
+* `3.0.1b18`:
+  - `import`: added import of SINTAX format
+<br>
 
 * `3.0.1b17`:
   - `import`: added import of UNITE fasta format