With the new D23 events for 2018 released there could be some clues as to when Toy Story Land will be opening Pandora & the Guardians of Galaxy ride in Disneyland both opened last year on Memorial Day weekend. This Memorial Day weekend could possibly see another land opening for the guests.
The D23 events are chronologically listed and the D23 event where members visits Toy Story Land looks to fall between May 23 - June 23.
May 25, 2018 – D23’s Return to Marceline in Marceline, MO
Summer – D23 Members Visit Toy Story Land in Disney’s Hollywood Studios
Summer – D23 Members Visit Pixar Pier in Disney California Adventure
June 23, 2018 – D23’s Magical Screening Series: Robin Hood in Burbank, CA
Nothing has been confirmed yet but it's always fun to guess!
News Source: Inquisitr