It's official. Google have announced that there will be no further development or updates for the Nik Collection of imaging effects -- and that includes updates for the current version of Adobe Photoshop CC, Windows10, or current MacOSX versions. As it turns out, these products don't just behave badly in Photoshop CC 2017, they don't even appear as available filters/plug-ins, and many won't run under Windows10 at all.
The Nik Collection included several Photoshop plug-ins that professionals around the world have relied on for their work, and that many had paid a lot of money for before Google bought Nik and reduced the price substantially, and finally made the plug-ins available for free.
Once again, Google has managed to leave a bad taste in the mouths of photographers around the world. Many amateur photographers were stranded when Google dropped Picasa in favor of online tools (based on Nik's SnapSeed), leaving them without the organizational and sharing elements of Picasa. This latest move completely alienates Google from the enthusiast and professional markets as well, despite the Nik Collection including some of the best and most popular Photoshop plug-ins every made.
The Nik Collection included Silver Efex Pro, arguably the best black-and-white photo conversion offered anywhere, as well as Color Efex Pro, Analog Efex Pro, HDR Efex Pro, Viveza, Sharpener Pro, and Dfine.