Currently, today’s date is is highlighted in the date-picker if the task does not have a due-date
However, if the task already has a due-date, then it is the due-date which is highlighted and today’s date is not shown or indicated at all.
It would be good to also show or indicate today’s date in the date-picker (same behaviour is as in Outlook or many other calendars, where the meeting date is shown, but also the today’s date is indicated visually)
Yes, the today class is present for today, and in non-dark mode, there is a blue border around the current day. You can use custom CSS to add additional visualization to it.