Minecraft has been updated to v1.14. You'll have to go out to new terrain to see all of the newest content.
I'm not sure if this update works with the map rendering software. From reading the Github project for Mapcrafter, I'm suspecting that it's not 100% compatible. We'll have to find out over the next few days. At the least, you can find out where the newest content is using the existing map rendering!
These types of updates are why I like us not exploring a whole bunch, and only exploring when necessary to find new content. This keeps us from having to explore crazy long distances for new content, such as with today :)
Please reach out to me if you end up finding any issues.