The one your looking for is Family Activity Feed.
Hi. The Wikitree Family News that comes on Wednesdays has three sections.
1) A "new this week section" which is Wikitree news and has nothing to do with family.
2) Additions and Changes. This is the important part to me. It contains all the activity that happens to profiles on your watchlist (unless you make the change). If you have nothing in this section, then nobody is making edits to the profiles on your watchlist, but you want to know that, when they do. You have a small watchlist at this point, but as you expand you will have more and may get some activity.
3) Section 3 is a list of Birthdays for people on your watchlist. Some people use this to make updates to profiles once a year.
The daily Wiki Genealogist Feed is the one that lets you know about activity with you tags.