The Kaveri Derivative is in works. Check out the Kaveri thread. Last few posts.
Yup . Checked it out . Which is why I was wondering whether they'd be powering this LIFT with the Kaveri derivative . The tech specs of the old Kaveri & the GE-404 aren't too far apart though the former never matched the latter in wet thrust. This derivative could right that part .
Interestingly Godrej Aerospace is delivering an initial lot early next year as per that defense channel though they didn't quantify the numbers. I'd expect a couple at least . Since this entire project is being funded in house they don't need to approach the Cabinet for approval or even need the IAF's sanction.
As for creating the prototype from HAL, let's see. If HAL is serious about it, I see them taking 2027-28 for 1st flight.
Could be earlier too . Most of the LRUs are from the Tejas lines . Metal fabrication shouldn't take much time if the dimensions are the same or similar & it's easier than working with carbon composites.
However , the testing could take longer if they go in for a Kaveri derivative power plant . The wise course would be to follow a dual path - have one prototype flying with the Kaveri derivative & another with the GE-404. Give the client a choice . Get IAF to procure a squadron or 2 with Kaveri derivative to rest the doubts other Air Forces may express at a new engine that too of Indian make & to boost export prospects.
Hopefully the production variant of the Kaveri derivative won't be more expensive than the GE-404.