I know adding prefs settings for individual shortcuts is evil, but since we don't yet have a UI for editing keymaps, and these features were requested A LOT, I think in this case it's justified:
* You can now enable Space+mouse drag to pan canvas, as it does in Adobe Illustrator. This mode is enabled by the "Left mouse button pans when Space is pressed" checkbox in the Scrolling tab of the Inksape Preferences dialog. By default it is off and pressing the spacebar key switches you to Selector and back, as it always did in Inkscape.
* By default, rotating the mouse wheel scrolls the canvas vertically and Ctrl+wheel zooms in and out. Now, if you turn on the "Mouse wheel zooms by default" checkbox in the Scrolling tab of the Inksape Preferences dialog, this behavior is reversed: mouse wheel zooms without Ctrl and scrolls with Ctrl. This new mode should be familiar for users of AutoCAD and CorelDraw.
* In the Zoom tool, right mouse button always zooms out instead of calling the context menu (which is rather useless in this tool anyway).