Originally Posted by hk1492

While I'm not sure about the specific answer to your question (whether it's possible to see the old view), IMO the new website is actually much better for this purpose.

If you make a search with expert mode enabled, click the word "details" toward the left side of the matrix that displays all of the fare options. The dropdown includes a listing of all the fare classes and availability.

Additionally, there's a new feature wherein you can specifically search for GPU- and RPU-eligible fares automatically. If you go into the "all search options"/advanced search page, scroll down and there's a section called "upgrade type". The results page swap out the middle column (typically showing the cheapest flexible economy fare when you're looking for economy seats) for the cheapest RPU or GPU (depending on our selection) fare. Yellow arrow in those boxes essentially means r=0 and that you'll therefore be added to the waitlist; green arrow means r>0 and you'll get upgraded upon booking.