I already have it installed (the gold master), but I can't for the life of me figure out how to search a page.
Searching in a page has been added on to the Google (or whatever you use) search facility. Just tap the search field and enter your search term. Instead of launching the search, scroll down to the bottom of the suggested searches and there will be a section labeled "On This Page". Tapping "Find "___________"" will launch the in-page search feature.
An unofficial method is to use the "Find In Page" bookmarklet. Available here.