The shoes have been updated sporadically since the original 990, all models have used the 99X numbering format, and some model numbers have been reused throughout the years.

On the 30th anniversary of the shoe in 2012, the New York Times reported, "The 990 has a cult following: according to New Balance officials, it was favored by Steve Jobs, and has also been worn by the actors Ben Affleck, Jennifer Garner and Hilary Duff.

[1] Forbes, BBC and other media also reported how Jobs wore the shoes frequently.

[2][3][4] New Balance Senior Designer Andrew Nyssen led the design of the 990 in 2012.

[5] Most of the information on the early models of the 99X Series is available on two New Balance promotional histories of the series in video format.