We recently posted an article about Guides in inkscape, and twitter user @daishi424 pointed out that a few of the features in that post were actually new features in Inkscape 0.91. So here are some of those features that you will get for guides when the new version of Inkscape is released.
Quick toggling of guides
Previously, to toggle the visiblity of guides, the menu item View > Guides and the associated shortcut “|” (the pipe key) was the only way. In Inkscape 0.91, guides can now also be toggled by simply clicking on the ruler (either horizontal or vertical).
Changing the colour of a guide
To change the colour of a guide, double click the guide to bring up the Guideline dialog. Click the colour switcher button under the Label field to change the colour of the guide
The Guidelines dialog (shown when you double click a guide) also allows you to set labels to your guides. These Labels are shown on the guide at the Guide Origin (the small circle that is on every guide)