I'm pretty sure they haven't announced the summer schedule yet. Strangely, I've found that the best way to stay informed is to sign up for the Golden Gate Casino mailing list. Go figure. For those who are in town this weekend, for ACM they have some pretty well known acts giving free concerts, including Jake Owen and Randy Hauser.
And in any case, I'd recommend going directly to this pdf https://www.vegasexperience.com/Assets/pdf/Entertainment%20Cal.pdf, because the vegasexperience.com website is an amateur hour mess. It makes you click on each individual date to find out what is going on, and it will unhelpfully keep the May schedule a secret until probably May 1. It auto-plays a loud announcer, then if you shut that off, music starts blasting (and good luck turning that off). And if you're already on the Street, it doesn't play well with mobile. Like I said, amateur hour.
Also, I'm pretty sure that this site will be announcing the shows in the Today's News section, so stay tuned.