The default resolution was changed from 90dpi to 96dpi, to match the CSS standard. For more background information, please see the Wiki article about handling of units in Inkscape. Inkscape 0.92 will attempt to identify ‘legacy’ Inkscape files that need to be converted. If such a file is detected, the user will be offered three options:
Set ‘viewBox’. Inkscape will add an appropriate ‘viewBox’ which will do a global scaling of the document. It will also adjust the document width and height if necessary.
Scale elements. Inkscape will scale each internal element.
Ignore. Do nothing. This is an appropriate choice for documents meant for screen display.