I am planning to update content on an already performing page and expand the content on page. In order to accommodate the extra content, updating the title of the page is necessary and I think could help the SERP of the page. The question is around updating the URL as well, which would require a 301.
The URL is constructed: http://www.example.com/title
.
How important is it to update the URL to reflect the new title of the page?