Some more beta release are planed to be released in march/april. The stable release follows within this year.
Then there will be versions for other languages and a 32 bit versions for older computers or some netbooks, too.
InvestiGateIX Beta 14
64 bit version: investigateix-15.04.13-amd64.iso (~1 GB)
InvestiGateIX Beta 13
64 bit version: investigateix-15.04.04-amd64.iso (~1 GB)
The complete source code of all running parts is available inside the live-system and the installed system.
After the release you will find a small archive including the Debian live configs and InvestigateIX sources here and on git.
Additionally the source code of the search engine is available on the Open Semantic Search project site.