I promised to the users of my Turkish Deasciifier add-on that I’d release a Firefox 4.0 compatible version as soon as I can after 4.0 of Firefox is released. I started to work on the old code which was based on an ancient version of Add-on SDK. It took me some time to wrap my head around the radical changes that the Add-on SDK team did to various APIs but finally I was able to port the old code into the new version that uses the latest version of Add-on SDK.
I uploaded the packaged .xpi file as version 0.2.2 to addons.mozilla.org and it is put into the review queue to be reviewed by someone from the add-ons team at Mozilla. As soon as it’s officially reviewed, users of the old version will get an automatic update. Or they can simply visit https://addons.mozilla.org/en-US/firefox/addon/turkish-deasciifier/ in order to enjoy automatic Turkish letter conversion on non-Turkish keyboards.