There is enough to talk about, they could talk about stuff that even has been featured in their gameplay video's.
Examples are:
- Overworld map. Talk about those choke points, the mercenary/bandits/sub faction bases we have seen in screenshots, geographical effects as in, what's it like to travel in the snowy north or the hot dessert of the south.
- Playeable factions. Give each faction a blog, explain their niche characteristic and show off the evolution of their troops.
- Show us in depth how the new diplomacy works.
- Give us some blogs about character growth and possible death.-
- Let us see how we can influence or modify our owned settlements and towns.
In general; just show us what you have been talking about, TaleWorlds. At this point I hope the game is mostly feature complete and you are fixing and tweaking, show us your hard work.