Disney's Hollywood Studios has announced the first Character Meet & Greets available in the new land:

Quote Originally Posted by Disney Parks & Resorts

... Toy Story Land at Disney’s Hollywood Studios opens to guests on June 30. ... inside this new land, you’ll have the chance to encounter some of your favorite characters from the Disney•Pixar “Toy Story” films, including Sheriff Woody, Buzz Lightyear, and Jessie the Yodeling Cowgirl.

Woody, Buzz and Jessie will be greeting guests throughout Toy Story Land on a daily basis