The 19th Firebird Developers' Day (FDD) will be held in Piracicaba - SP, Brazil on the 8th of October.
In the article "How to install Firebird 3.0 and 4.0 on Linux" you can find the installation instruction for Firebird versions 3 and 4 on the popular Linux versions: CentOS 7, Oracle Linux 7/8, Debian 9/10, Ubuntu18/20, and OpenSUSE15.0.
Free open source UDR to perform full text search queries with SQL in Firebird 3 and 4, based on Lucene++ engine
Jaybird 4.0.6 released
New article reviewing Firebird SQL
Jaybird 4.0.5 and 3.0.12 have been released