Someone on avforums said the CX48 will come down to 1.4K again in Black Friday, but he didn't mention the source so not sure if true or not also the 55cx will come down also to 1.2-3k, if one can bag a £100 gift voucher and free £80 FN4 ear phones maybe its worth a check.
Still I agree if you can wait LG will probably release the C11 next summer/fall and imo it's always better to have hdmi 2.1 devices on the shelves and in peoples homes so one can support it properly, the CX seems a bit of a flaky with its lack of DTS support and lack of full hdmi 2.1 hardware, it's not like it doesn't cost an arm and leg as it is.
Eh, why do you care about DTS if you're using this as a monitor? It's also a codec being removed from other TVs in 2020. It's doubtful it will be coming back. Also what do you mean lack of full hdmi 2.1 hardware? It supports 2.1 fine. It's as likely C11 will have its own set of issues. I don't see much point waiting. I mean, the next version will always be better in some sense, it's the same with buying any electronics.