Hi, CIR expert here, it's well and alive. There has been a communication push against it last year but relatively over.
It's 30% of R&D expenses as a tax cut.
Update: I think the 50% you mention is related to non salary expenses CII = a smaller similar system for innovation, which we differentiate from R&D. CII used to cover non salary expenses with a 50% forfait but this part has been removed indeed. It still covers 20% of salary expenses.