Well, here's the problem. Any updates to rF2 could affect the client-side (such as, primarily, continuing to improve and fix the AI) or server-side. We know they have (had?) an alpha test of the Race Control system as a replacement for the existing Competition System (CS). But we've heard nothing about this for a very long time. If LMU is due to ship in December, then they ought to be testing the heck out of Race Control now, with as many users as they can muster. But they aren't. My speculation is, they are so far into "crunch" on LMU, that every single dev they have (coders, content) are working on getting the core LMU to work, and so they don't have time to be doing the same coding (enabling robust Race Control) in rF2 as well.Coming soon they said
So here's what we're facing on the rF2 front. They have to get LMU released, and support it in its early life. They've talked about adding DLC as well, such as some historic cars and tracks, in future. My guess is, if LMU sales go well, they'll want to release that within 6 months or so to capitalize on it. That uses up the content team for a long time. Thus, I wouldn't expect to see updates to rF2 code/functionality until mid 2024, other than perhaps Race Control. My bet is LMU will be plagued with the same AI issues as rF2 has.
I've come around a bit to the idea of buying LMU. I don't see the content from that ever making it to rF2, or at least, not for a very long time. I'm kind of OK with that, now, where I wasn't before. rF2 can still survive without having LeMans/endurance sportscar content, but let's be clear, it'll be very much diminished when it does so. I think LMU may be able to ditch legacy code baggage from rF2, without the need to support all the old mods out there. I think this has been taking a lot of developer time and effort to figure out workarounds, to have that content still work in new versions of the software (think sound engine treatment of old samples mono/stereo, various graphical techniques especially lighting). While LMU is not rF3, it may be able to make faster headway without all of its technical debt and legacy code. rF2plus, if you like. And that may just be enough of a reason to buy it...
Having said which, my main simulator iRacing should be releasing rain in that same timeframe, and they already have the full set of GTP cars and I have my Fezza 296 also along with more up-to-date GT3 cars than rF2 has. That'll be a major overhaul of that, both graphics and physics/vehicle dynamics. Lots to learn and tweak on that, then.