It's obvious you didn't visit wol.bet or this thread for quite some time! You are right that they started with only a dice game but it was very entertaining and I spent hours and hours playing there especially with the generous wagering competition they had.
I did not visit Wolf.bet for a long time and I am surprised to see all their upgrades as well as their customer growth and product upgrades. The website is more user friendly and interface is very neat and well designed.
But the sportsbook is not new. They added it a long time ago (not sure about the exact date). The announcement is about an update on the already existing sportsbook and it coincided with the world cup.
Honestly I did not know about sportsbook upgrade on Wolf.bet and if they launched it previously, World Cup is still a great opportunity for them to make their sportsbook more attractive.
Who are soccer fans and gambers will skip this World Cup? If you are gamblers and are soccer fans, you surely will make bets with World Cup matches.
If you plan on being a regular player on Wolf.bet or want to get updates, you can always join their telegram channel
and get all the latest updates as they occur. I know some users don't like telegram, but joining subscriber channels is 0 risk vs chat channels where you might be prone to scam attempts.