Gilbert, what are you talking about... The feature is there! The link on the Last Post, in the forum summary leads directly to the last post, and the link to the last post also exists in the main Forums page.
Also if you use the Today's Topics on the top, that has the most recent threads that have been changed, plus it lists some text on the last post made...
Yes, the link on the Last Post leads directly to the last post but, it still does not tell me when it was posted. Unlike before where the date/time are showing along with the name of the person who posted.
So if I had visited/read the thread already 2 days ago, for example 06-04-2003, and I see in the Last Post column the date 06-05-2003, right away I know that there is a new post that I have not seen/read. When there's multiple posts on the same day, then the time becomes important too to be able to jump to unread posts much faster.