Some services provide public access to their user's favorites. For Favs these are:
You can simply filter all unread - and therefore new - articles by toggeling the unread button.
Once you selected an article it will be marked as unread. From the context menu it is possible to change the read state back to unread and also to Mark all as Read.
To don't get flooded by new articles you can set per source if you like to have new articles marked as unread or not. Just click a second time on the selected source and a pop over will appear where you can change the setting.