When does Blue's Room return?

Blue's Room is an American puppetry television series spin-off from Blue's Clues. It was created by Traci Paige Johnson and Angela Santomero. The show aired on Nickelodeon as part of its Nick Jr. block. The series centers around the title character and host of the show, Blue, a happy-go-lucky female blue dog.
The series centers around Blue, a happy-go-lucky female blue dog who talks and loves to sing, dance, and play with her new friends. Blue often interacts with her friends including Sprinkles, a shy little brother who was introduced in the second season as the co-host. Together, they go on adventures, solve different problems, and use their imaginations.