Since yesterday's UI update, when selecting a date, "Today" is no longer highlighted. It used to be and this allowed the user to quickly be aware of today's date, instead of having to take the time to check today's date, orient themselves within the calendar and then select their date based on today. There are a TON of use cases where this is important and there is no reason why it shouldn't be there. I hope this was an oversight with the new UI that will be quickly fixed and not an intentional decision. Obviously the highlight should be something less vibrant than the actual selected date (just like before).