I caught the first episode. This is one of those shows that's going to join 'Gerald McBoing Boing' and 'Krypto the Superdog' on Boomerang if it gets enough episodes under it's belt.
Basically, Will, a young boy opens each 10 minute segment with a song about that episode's topic or theme, then we cut to the actual episode, where Will, with the help of DeWitt, the talking frog, takes on whatever life throws at him, wether it's sleeping alone in his new bedroom (His big brother seems to a toned down version of Foster's Francis), or trying to get used to a new pair of boots.
The songs are... bad, but the show's not as bad as one would think. It seems like it'd be a better fit on Nick Jr., though.