> Does somebody know by the time the version will be freed 2.1.4?

We have to release 2.0.6 and 2.5 RC3 soon. Then we will prepare 2.1.4, i believe.

Also you can look at current roadmap :

http://www.firebirdsql.org/index.php?op=devel&sub=engine&id=roadmap&nosb=1

Regards,
Vlad