A few quick points. There are eight Kaveri engines in existence today and four Kabini cores. The engine that will be
tested on an Il-76 test-bed this October at Russia's Gromov institute will be one of the eight samples that already exists -- not a Kaveri with a Snecma M88 ECO core, which does not exist yet; GTRE has only completed preliminary design and configuration for the 90kN Kaveri-ECO engine.
Photos Courtesy GTRE