Exactly. They are keeping their backbone. Probably Kroos and Casemiro will still start. Probably Modric too if they don't sign anyone there (Eriksen or similar). Varane will start, Ramos will start, probably Carvajal too if he is fit. They are going to try to bring back Marcelo on form too, Zidane hasn't given up on him I think.
I wouldn't be surprised if the only change for time being in the first 11 is Hazard and maybe Mendy (seems Zidane didn't rate Reguilon too highly). I doubt Jovic will replace Benzema very soon, and I don't see him playing well wide. What they have now though is great depth again to impact games from the bench, something which Zidane likes to do. He has options, and unlike our idiot Valverde, he knows how to use a quality squad, because he already did it to great results in 2017.
The changes aren't huge, but they will play better than last year, and their motivation (including motivation withing the more veteran group of players) will be high probably to not repeat the terrible last season.
Also, Zidane is a different level to Lopetegui/Solari. These signings under Lopetegui won't do shit. These signings with triple CL winner Zidane might go places next season. They will challenge hard for La Liga / CL and my guess is they're gonna win one of those two.