At least a dozen Z-mount lenses and accessories are getting a price increase here in the US. The most significant of those will be the f/2.8 zoom trio, each of which gets a US$100 increase. All the DX lenses get a US$10 to US$30 price increase. A few other lenses get US$10 to US$50 increases as well.

Nikon claims that the increases are necessary due to cost increases in component parts and some logistics (basically shipping for those parts between plants and getting products to subsidiaries in a timely fashion).

Europe and several other parts of the world had already seen price increases from Nikon, but the strength of the US dollar probably helped stall the need for them in North America. The irony, of course, is that many of the products showing price increases were just on an instant rebate program, which probably drove demand up, and then you need to build more and that costs more...