I seem to remember that there was talk of plans for a new business class lounge in the 40s gate area. I cannot remember what it was discussed as being called so I can't search for it. That said, I don't recall seeing anything about it for a while so perhaps nothing is actually planned. I'm sure a fellow poster will know more up to date information than me, although in the absence of any recent discussion about it, I'd assume it won't be open before the Pier J closes.