Four relatively new features have been added to the FamilySearch.org Search function.
1. Search for Multiple Relationships within Historical Records
2. Refine Your Search without Returning to the Original Search Page
3. More Flexible “Find a Collection” Search Experience
4. Automatic Standardizing When Attaching Records
You can read about the details of each of these in the above-linked blog post. Some of these enhancements are long overdue although you might not even notice the changes unless you are very familiar with the search process on FamilySearch.
One possible addition not mentioned in the post is a Historical U.S. Counties Auto-Checker. This is not a FamilySearch app but a separate Chrome extension. Although most of the date ranges for counties and other jurisdictions have been added to the standardization process.