At the center of the lineup is a new standard-sized Trådfri smart LED. It features a built-in ZigBee radio that'll let it sync up with your home network for automated lighting changes and full dimming control on your phone.
Region-by-region availability isn't locked in yet, but the Swedish price per bulb comes out to about $23/£18/AU$30, converted roughly.
You can also pick up a bulb that comes packaged with this wireless dimming puck. You don't need the gateway to connect the two, but you will need it if you want to sync the dimmer up with multiple lights all at once.
There are a few other bulbs in the Trådfri lineup, including this smaller E14 bulb. There's also a clear-globed LED and a GU10 LED. All of them are expected to start hitting Ikea showfloors on March 31, though region-by-region pricing and availability are yet to be determined.