This episode also took place before "Laugh with Blue" because Turquoise was seen in the bedroom bookshelf.
Not counting the 2002 update of Blue's Clues Live!: Blue's Birthday Party, this is the first time Joe celebrates Blue's birthday. This is ironic because Joe had a birthday in "Joe's Surprise Party" in the original Blue's Clues series.
This is the second time Alexa PenaVega appeared in a form of Blue's Clues media, she previously appeared in a promo for the Blue's Clues special "100th Episode Celebration".
This is the second episode that doesn't follow the formula "[Subject] with Blue/[Character]" after "Meet Josh!".
Nick Jr.'sFacebook page posted a shoutout video wishing Blue a happy birthday on the day of the episode's premier. In addition to some of the celebrity shoutouts from the video letter, this video also contains shoutouts from other celebrities as well as characters from this and other Nick Jr. shows: