Re: As soon as Windows 7 support finishes
Dude;
use this from the console as root to get rid of your wine version:
dpkg --purge $(dpkg -l | awk '/^ii\s+wine/ {print $2}')
Then use the instructions on this page: https://wiki.winehq.org/Ubuntu to install the official stable version from winehq.
For experimental versions use wine-staging. (google is your friend)