As much as I'd like to drop a mysterious teaser comment on things like this, it really wouldn't be a cool thing to do to our guys who put their time into making promo materials since it would lower the surprise impact factor of such announcements. It's also kind of rough on our teams who work directly on big showy features for someone else who isn't on that team to publicly put pressure on them to release something that hasn't been announced yet.
All I can really say here is that these placeholders aren't for show, we are actively discussing, trying out, and building new stuff that could show up here. When that would be and what it would look like is something you'll just have to wait and see.