User Role Editor version 4.6 is available for download in both (free and Pro) versions. The changes are:
– Content editing restriction: It is possible to differentiate permissions for posts/pages creation and editing. Use the “Activate “Create Post/Page” capability” option for that.
Turning on this option you automatically add “create_posts” and “create_pages” capabilities to the list of WordPress core user capabilities. After that user with “edit_posts” capability (even administrator) will can not create new post or page until you apparently include this capability to his user role. “edit_posts” will permit just to edit posts. Go to “User Role Editor” and turn on “create_posts”, “create_pages” capability” for “Administrator” role and other roles of your choice after this option activation.
Read more User Role Editor version 4.6