The new season of The View is set to air on September 8th and Meghan will make her first appearance on the show on September 9th and stay for three days.
Also confirmed to guest co-host in September is former Fox News Channel anchor E.D. Hill, who will join the ladies on September 23 and 24.
Earlier this week, McCain tweeted about a special announcement, but wouldn't confirm what they were.
"Going to LA next week to film something so crazy and amazing, I promise all will be revealed but SO EXCITED and SURPRISED to be asked!!" said one tweet.
"And then I have another very special announcement coming up in September, gonna be a busy few weeks/month," said the follow-up.
Hasselbeck isn't due back to work until mid-October so we're sure there's going to be more guests lined up for the show. Who would you love to see guest star on the panel?