Preview Edits of Published Page

I gather that what was the "Preview" button has been renamed as "View" to be more in line with the button's functionality. I also have read the recommendation to create a duplicate unpublished page, make the edits, and then copy the new content into the published page. On a large site with dozens of editors and thousands of pages, this can be quite messy.

Is there any plan to add a preview feature to MODX? Are there any plugins I could use? I am finding that not only do you have to save the page, but also clear the cache for the entire site to view the edited content. Is this accurate? That's a lot of overhead just to preview edits to one page.

MODX Revolution 2.2.0-pl2