https://blog.flipper.net/released-firmware-1/

What’s new in Firmware 1.0

  • 3rd-party apps: We’ve introduced dynamic app loading support. Now you can install hundreds of community-developed apps from the Apps Catalog, and the number of apps continues to grow.
  • New NFC subsystem: Completely rewritten from scratch, resulting in a significant increase in card reading speed. New NFC card types support and a new plugin system for user card parsers.
  • JavaScript support: You can now develop apps for Flipper Zero using JavaScript.
  • General system improvements: Battery life reaches 1 month in standby. Bluetooth data transfer speed with Android devices increased by up to 2x. Firmware updates now upload via Bluetooth 40% faster.

More details in the blog post. JavaScript support looks intriguing.