Is the LG G6+ coming to AT&T and other US carriers next year?

Of course, you could go ahead and buy the international version on Amazon, but that will not come with a warranty and it's not even working with all US carriers, as you'll only be able to use it on AT&T and T-Mobile.
There are also three other versions of the LG G6+ listed on the same website, which might or might not correspond to the other major carriers in the United States: LG LS993U (Sprint), LG VS988UB (Verizon) and LG H872UBL (T-Mobile).
If you're not aware, the LG G6+ comes with 128GB internal memory, unlike the regular LG G6 that packs only 32GB expandable storage. Also, the G6+ features 24-bit Hi-Fi Quad DAC, something that the American version of LG G6 lacks.
Things that are NOT allowed: