Seeing more templates

The picker starts with the three best matches. Press Show me 3 more to load the next three. Press Back to return to an earlier set. The counter under the grid shows the range you are looking at and how many templates were matched in total.

When you reach the end of the library for your site the picker says That is every template we have for your site. and the button no longer loads more.

Templates you have already seen stay loaded, so paging back is instant.