COLOR
Jackfruit, Restore, Calm and more are colors highlighted throughout upcoming fall trends in children's apparel. 
PATTERN
Playful Dots
Polka dots are back with playful and spontaneous energy. Acting as an organic mood booster, the polka dot is a versatile pattern seen in heavyweight coordinated sweat sets and thin cotton pieces.
Clean Block
A calming presence is brought with the tranquil tonal technique of the classic color block arrangement. The clean block look is modernized with the tri-color design and subtle pop of contrasting hues. From knits to activewear, you'll see the clean block pattern often this fall.
TEXTURE
Quilted surfaces, cozy knit and fur trims are key factors seen in upcoming trends this season.
Source: Fashion Snoops