Nokia unveiled the second-generation of a wireless charging plate for use with its compatible handsets. The plate will come in orange, white and green (matching the Lumia 830 paint jobs) and is NFC-enabled for pairing. Once paired it talks to the phone via Bluetooth 4.0.
The charging plate has a built-in glow light and can, for example, glow a certain color while the battery charge is below a certain percentage. It can also blink in a pattern for notifications. Note that this works with Windows Phone 8.1 only.
Another new device is the Microsoft Screen sharing for Lumia Phones HD-10 (yes, Microsoft knows it's a mouthful). This is essentially a competitor to Google's Chromecast, it uses the Miracast standard to mirror the phone's screen on a TV.
It has an NFC "coaster" that normally sits on the device and can be used to pair the HD-10 with a phone.