I am finding a RSS for the extension directory joomla. But no luck for this at this moment. Why am I so keen about this RSS? Because I wish to know the latest updates for all Joomla components. Almost all RSS readers will notify the user if there is any new entries in RSS. In this way, keeping update that is so easy instead of visiting their "What's News" page daily. Thus, I think RSS is essential for the kind of "What's News" Component