They extended the deal for 3 years in 2019 as per club website. I think this is the last season. https://www.brightonandhovealbion.com/news/1273226/albion-extend-nike-deal
Watching the great away performances in the Chelsea and Everton games triggered me to check out the club shop to buy the away shirt. I think the turquoise shirt is our best away kit in years and this season we have also probably had our best away performances.
But….the shirt has been sold out...