If the database lists the LM340UW5 panel as being manufacture May 2018, then we should be seeing monitors on shelves this year, if similar timelines apply. The notes state "G-sync, HDR 400", so we are not talking about the 34GK950F.
You seem to think the production schedules listed at TFTCentral would allow us to estimate when a monitor combining G-SYNC + LM340UW5 will hit the market. That's analogous to thinking the initial production date of the LM340UW4-SSA1 (Q3 2017) would have allowed us to estimate the release date of the
34GK950G (end of June or early July 2018). That is flawed.
Looking at the older entries in TFTCentral's panel database, we can deduce that it takes between two and three months before a panel that goes into production, reaches retail channels as part of a monitor.
Daniel - LG already mentioned that the LM340UW5 panels are initially allocated for production of the 34GK950F (34", 21:9, 3440x1440,
FreeSync). This monitor is already listed on some of LG's websites. Retailers are starting to list it now. I think it's safe to assume that it will be released sometime next month, roughly two months after initial production of the LM340UW5 commenced. That all matches up.
The only inconsistency is that for the LM340UW5, TFTCentral also mentions G-SYNC support. However, G-SYNC support isn't directly related to the panel (that's a function of the controller).
Possibly Daniel - LG's and TFTCentral's sources are contradicting each other, but I doubt that is the case. I suspect a monitor combining G-SYNC + LM340UW5 will eventually be released (so TFTCentral is correct), but it will be released much later (so Daniel -LG is also correct). By the time it is released, the LM340UW5 will already have been in production for many months, making panel production schedules useless for the purpose of estimating monitor release dates.
Furthermore, if LG actually did intend to release a monitor combining G-SYNC + LM340UW5 anytime soon, then releasing
a monitor combining G-SYNC + LM340UW4-SSA1 (a.k.a 34GK950G) is utterly senseless. The former would cannibalize the latter's sales. However, LG is releasing the 34GK950G within the month.
TL;DR:
- if LG releases a monitor combining G-SYNC + LM340UW5, it's yet quite a ways off
- panel production schedules are likely utterly useless for the purpose of estimating the release date for a G-SYNC + LM340UW5 monitor
All of the above assumes the information we currently have to go on is in fact correct.