- Deprecated curly braces substring syntax was replaced with square braces.
- TCPDF library was updated.

- The signature of the F_escape_sql function was changed to add the database link identifier.
- The MySQL Database Abstraction Layer now uses the MySQLi extension by default (you can set the 'K_DATABASE_TYPE' constant to 'MYSQLDEPRECATED' to use the old extension).
- TCPDF Library was updated.

- TCPDF Library was updated.

- New JSON export format.
- TSV report now includes the details for each user.

- Support for 0-difficulty questions was added.

- IMPORTANT: the database schema is changed please use the upgrading SQL files in case of upgrade.
- This version includes a new feature that allows to restrict test access based on client SSL certificate.
- It is now possible to restrict the admin and/or public area access only to clients with valid SSL certificate (check the new options on the admin and public configuration files).
- TCPDF Library was updated.

- TCPDF library was updated.
- An additional ordering option for questions was added on the test editor.

- Latex rendering class was removed and replaced with a new function.
- phpCAS class was updated.

- A problem related to MySQL and boolna values was fixed.
- TCPDF Library was updated.

- Some RTL language problems were fixed.
- TCPDF Library was updated.

- IMPORTANT: the database schema is changed.
- Constant K_OTP_LOGIN was added to shared/config/tce_config.php to enable One-Time-Password.
- Constant K_LOGOUT_URL was added to shared/config/tce_config.php to customize redirect link after logout.
- All test statistics were merged on a single page with more information: tests > results.
- Test statistics are now also available on the public page.
- The SVG statistic graph is now exported on PDF.
- Ordering mode options were added on test editor.
- A password-specific test feature was added on test editor.
- Some problems on test editor were fixed.
- A selector page and popup for tests was added.
- The history of repeated tests is now preserved.
- Performances of test generation were improved.
- Some authorization/permission problems were fixed.
- "font" and "size" tags were added on tcecode to set the font family and size.
- A virtual keyboard was added on some textarea fields.
- Navigation buttons on the public interface now reports the number of questions.
- Questions can be exported and imported using a tab-separated values format (TSV).
- All CSV formats were changed to TSV (tab-separated-values).
- Autosave was added for free answers (only supported by newer web browsers).
- Some files were renamed.
- TCPDF Library was updated to version 6 ad moved to another folder.

- A security vulnerability problem was fixed (thanks to High-Tech Bridge Security Research Lab - https://www.htbridge.com/advisory/ ).
- The TCPDF library was updated.

- On Test Editor is now possible to select all type of questions at once.
- The favicon.ico file was updated.
- The TCPDF library was updated.