Nikon updated their Nik Color Efex Pro for Capture NX 2 compatibility table

ニコンヨーロッパのサイトでNik Color Efex Pro for Capture NX 2の互換情報が更新されています。

▼ Nik Color Efex Pro for Capture NX 2

Shortly after the acquisition of NikSoftware by Google in September 2012, Nik ended sales of the Color Efex Pro plug-in for Nikon Capture software.
From the end of January 2013, Nikon Europe no longer distribute Nik Color Efex Pro for Capture NX 2 and it is no longer available from our online sales site. However, should you be a current user of Color Efex Pro, you can of course continue to use the plug-in with Capture NX 2. Please refer to the table below for version compatibility.
If you previously purchased Color Efex Pro for Capture NX 2 from Nikon and require further assistance or technical support, please contact us.

Nikon Software version	Nik Color Efex Pro version
Nikon software is not compatible	nik Color Efex Pro 4.0
Capture NX 2.3.0 or later	nik Color Efex Pro 3.0 64 Bit version for Capture NX2
Capture NX 2.0.0-2.2.8	nik Color Efex Pro 3.0 for Capture NX2
Capture NX 1.2 or later / Capture NX 2	nik Color Efex Pro 2.0 for Capture NX
Capture 4.1 or later	nik Color Efex Pro 2.0 for Capture 4

こうやって見ると『Capture NX2』ってプラグイン突っ込める仕様だったんですね。ちなみに以前『Lightroom』にお試しで突っ込んだ『Google Nik Collection』のお話はこの辺に。