One of my professors worked on LISA Pathfinder, the demo satellite used to proof-of-concept LISA technology until the financial shortcomings in the early 2010s were overcome and he recently said that everyone in the project is hard at work getting ready for the program review, after which either a contract is made or the program is reformulated. But no one will put in the gigantic work needed to prepare such a review if it is not almost certain the program will pass the review and become a contract, so things are looking quite good for LISA and its early 2030s launch!