Series Premiere September 13; Season 1 Episodes
A sneak peek of the new series will air after Phineas and Ferb: Mission Marvel at 9 p.m. But it only have one segment of one episode, titled "The Picnic":
http://www.toonzone.net/forums/disney-pixar-forum/305254-august-2013-p remieres-disney-channel-disney-xd.html#.UecRSNJBSUM
EDIT: Disney Channel had announced the official premiere for September 13 at 9 p.m. with the episode "The Greatest/The Egg". However, starting August 30, the same episode will be available for free on iTunes.
http://www.thefutoncritic.com/news/2013/07/22/disney-channels-intergal actic-animated-comedy-series-wander-over-yonder-from-emmy-award-winnin g-producer-craig-mccracken-premieres-friday-september-13-29414/2013072 2disney01/
I'm bonkers for eating you alive!