So far for the single page layouts the street index could only be rendered on the side or the bottom of the same page.
Now it is possible to have the index rendered on a second page in PDF output. So it is now possible to duplex print a map with the actual map on the front side and the street index on the back side of the same sheet of paper.
As the other output formats do not support multi page output there will no extra index page be generated for these. Choosing the “index on extra page” layout these formats will have the grid added to them again though, which can be used in combination with the generated street index file in CSV format.