The v4 Lab Interface is way different than in past times. In summary, here are some interesting changes:
1. New Lab Delivery System.
2. NO PAPER Lab Workbook. Everything is now on Lab Delivery System app.
3. Uses Putty WITHOUT Tabbed sessions.
4. It is a little kludgy, so get used to it!
Don't waste a lab attempt not being familiar with these important changes!
Here's a good video demo: