We don't support the context menu in VS2010. Most of the commands in the menu are available elsewhere.
However, the command "VAssistX.OpenContextMenu" is still available and can be bound to a custom binding. I just did a quick test and the menu is working here, but since we don't support it officially we didn't test it thoroughly.
Ok, that's a shame but thanks for the quick response. I noticed the command was still there yesterday too, but you can't bind it to the same as it is in VS2005 because when you press the key that's the same as the right click (the actual command/menu key next to Alt-Gr) it is interpreted as a right click in the text box rather than a keypress - so it brings up the Windows context menu instead. But if we can bind to another key then that is something I can live with.