Yes, business etiquettes are being followed and still much in use in today's era.
Wearing proper business attire, using correct grammar, correct email and telephone etiquette are all still in use till this day.
Client take note of your actions and reactions in the business world. Good business etiquette are needed to seal business deals in our world today. So therefore, business etiquette are still being followed in today's era.
Some people might say that business etiquette is not being followed anymore but a lot of experts disagree. Business etiquette is important because it will be remembered by people who will cross your paths from time to time in the business world. They will remember your reactions, the things that you have done, and so much more. Remember that the shifts are still being followed and should still be completed no matter how informal the business setting may be. This is the same with the dress code.
Wearing casual clothes can be comfortable but do not get too comfortable that you would be in your pajamas. You should also not start gossiping around while you are at work especially if you have tasks with looming deadlines. The open-concept floor plan may seem appealing but according to business etiquette, you should not treat your office like one big marketplace.