Here are a few shot from the ch 498,
The pic is of Kushina as a child.
As stated in the spoiler, she was said to have a special type of chakra because of which she got kidnapped by the Cloud ninja's during her academic years in Konoha, and it was Minato who saved her (thanks to Kushina making a trail out of her hairs so that she could be traced), and she fell in love wih him from that point on. Though nothing is said particular on what type of special chakra she has, it is implied that she is going to transfer her special chakra to Naruto.
Kushina's hair is as long as the present Mizukage has (which is really long).
Naruto thinking how he would look like with Kushina's hair colour & style.