Once you land on the hotel details page, you can now filter for hotels that are ‘pay now’ aka pay online, or ‘pay later’ aka pay at the hotel. Either option allows you to reserve the hotel.
This is a convenient, user-friendly feature. I am a UX maniac and I'm convinced that you can empower users/travelers and let them make the best choices if you manage to overlay the right level of -relevant- information in a compelling way and a 'sexy' UI. Transparency matters! A good way for travel managers to anticipate expense management too.