Ancestry recently announced they have created several more AncestryDNA communities. These 225 new communities are focused on the UK, Australia, New Zealand, Canada, and French North America. The announcement is here.
Ancestry communities are formed by combining information in Ancestry family trees with DNA match information. This is different from ethnicity percentages, which compares a person to reference populations today from around the globe.
For my own results, I now have a French-Canadian community, Southwestern Quebec French Settlers. This does match well with my paper trail. Of course, not every community will be accurate, but communities can be helpful leads for research.