Nintendo America has announced two new Joy-Con color pairs that will be releasing in October. The Sets are Dark Blue / Neon Yellow and Neon Purple / Neon Orange. Pricing is the same as other Joy-Con on the market and are set at $79.99 per pair.
— Nintendo of America (@NintendoAmerica) July 17, 2019
It has not been confirmed if these new sets will be available outside of the US or Japan. If they are, they will most likely be contrasted to the American sets. Worst-case scenario, they could be ordered and shipped worldwide via the likes of Play-Asia. You can look forward to these Joy-Con come October 4th.
Source: Nintendo America (Twitter)