Indeed and they'll want to know that CD Projekt aren't putting all of their eggs into one basket. One of the many problems with Cyberpunk 2077, during the last 5 years of its developments, was that the management just threw people at the project to ensure the hype train could still choo-choo down the line. It started around Witcher 3 size (about 250 or so) and towards the end, it was double that size internally, and almost 6 times as large globally.
Pinning all of that associated cost on one title is an enormous gamble and while it paid off with CP2077, I should imagine the numerous issues and overall reception it received has made it necessary to provide public reassurances that should a future project look increasingly problematic, they've something else they can turn to.
The largest development teams often have multiple projects on the go, so this isn't unusual nor automatically worrisome. Triple A titles don't all have to be another Witcher 3 in size and scope, after all. I'd be more concerned about how CD Projekt manages its ambitions and projects.
Except their shareholders never wanted anything to do with diversifying or moving away from The Witcher franchise. They were extremely upset when told about Cyberpunk 2077. And while the company has made billions, they've only paid out dividends to those same shareholders twice: in 2016 and again in 2018 and that's it.