These are apparently the first officially-licensed wireless Switch controllers released.
Pre-orders start at $49.99 (USD) and come in a variety of colors. They also feature a few additional buttons that you can map additional actions to, sort of like the Xbox One Elite controllers.
PowerA Enhanced Wireless Controllers for Switch provide gamers:
• Reliable wireless connectivity – enabled with efficient Bluetooth™ 4.1 technology, the controllers provide a virtually lag-free experience. No pesky adapters or dongles needed.
• Integrated motion controls – PowerA Enhanced Wireless controllers are now motion-friendly, enabling a more authentic gaming experience.
• Advanced gaming buttons – Does having to click on the analog stick while running slow you down? Now you can gain a competitive advantage and “play your way” by mapping additional actions to either button on the back of the controller.
Additional Features and Specifications
• Bluetooth wireless
• Integrated motion control
• Advanced gaming buttons
• Officially licensed
• Battery warning indicator
• 2-year warranty
• Reliable wireless connectivity – enabled with efficient Bluetooth™ 4.1 technology, the controllers provide a virtually lag-free experience. No pesky adapters or dongles needed.
• Integrated motion controls – PowerA Enhanced Wireless controllers are now motion-friendly, enabling a more authentic gaming experience.
• Advanced gaming buttons – Does having to click on the analog stick while running slow you down? Now you can gain a competitive advantage and “play your way” by mapping additional actions to either button on the back of the controller.
Additional Features and Specifications
• Bluetooth wireless
• Integrated motion control
• Advanced gaming buttons
• Officially licensed
• Battery warning indicator
• 2-year warranty
Apparently they also have some wired ($24.99) and wireless ($49.99) GameCube style controllers coming soon that can be used for the Switch. I'm assuming these will be popular among the Smash community.