(Image credit: Google) It’s been nearly three years since we got a new Fitbit model (excluding the kid-centric Fitbit Ace LTE). That all changes today with the introduction of the Fitbit Air, a $99 screenless and subscription-free tracker with a simple-to-use disposition, a week of battery, and basic sleep, workout, and holistic insights. While the popular, screen-less Whoop 5.0 tracker is targeted toward hardcore athletes, the Fitbit Air is designed to appeal to just about anyone. Here’s everything you need to know about the new Fitbit Air, including availability, onboard tech, features, and outlook. Fitbit Air: price and availability (Image credit: Google) The Fitbit Air is available for preorder starting today for $99, with units expected to ship by the end of May. That price includes the tracker itself and one swappable band. Additional bands — they come in a huge range of styles — start at $34.99.…