I am looking for a mesh router recommendation. I have a single story house about 4-5k square feet of property. In the home it is about 15k square feet but i would like to get reliable wifi in the back

Will there be a wifi 6 deco version release soon? I need a mesh network but would like the capabilities of wifi 6.

I am in the market for a new router and would like to have a mesh setup. I am interested in the new AX1500 or AX3000 routers but it does not seem like it supports one mesh to use with extenders. Will