In their second year, the Icinga project released unified and stable Core and Web; added dual-stack IPv6 / IPv4 support, optimized database connectivity and revamped the Icinga Web user interface, integrating various community add-ons (PNP4Nagios, LConf, Heatmap and Business Process Addon).
In October 2012, the Icinga project released a technology preview of a core framework replacement and parallel development branch, Icinga 2. The developers expressed their intentions to rewrite the core to correct shortcomings such as complicated configuration and scalability limitations in large deployments [REF].