Analysts are forecasting a new model of AirPods by the end of the year. Unlike the second-generation AirPods which just arrived weeks ago, the third-generation will have a new form factor and a higher price, while another model may keep the same price and form, but with a new manufacturing process. They may also include noise-canceling.
With two sources talking about this, it seems likely. The AirPods have been a huge success for Apple, but they need a new design to give current users a reason, other than an aging battery, to buy new ones.