There have been important strides lately, and here are some more.
First, an international standard for docking rings and ports has been announced by the International Space Station Multilateral Coordination Board (MCB), including NASA, the Russian Federal Space Agency; the European Space Agency; and the Canadian Space Agency: and two agencies from Japan.
Meanwhile, the Canadian Space Agency has charted its own path for future exploration:
Canada is fleshing out its role in accordance with 2007's "The Global Exploration Strategy (GES)," being coordinated through the International Space Exploration Coordination Group (ISECG). Canada produced the GES along with agencies of Russia, the US, the UK, Australia, China, France, Germany, India, Italy, Japan, South Korea, Ukraine, and ESA. European representatives are meeting now to follow suit