People over at palmInsider posted few of the soon to be announced smartphone Treo 680.

The Treo 680 has the similar design as Treo 750 with no external antenna. The internal memory get a boost with 60MB available memory, though the camera will be a lower end VGA module. There is really no point to upgrade your Treo 650!

Specifications (Not Confirmed)

• Palm OS 5.4.9
• Radio: GSM/GPRS/EDGE (GSM 850/900/1800/1900)
• Intel XScale 312MHz processor
• 320 x 320 color TFT touchscreen display 16-bit color displays up to 65,536 colors
• 128MB (60MB user accessible) non-volatile
• Bluetooth 1.2 (Support for Bluetooth stereo headsets)
• Speakerphone
• Hands-free headset jack 2.5mm
• Polyphonic MIDI, MP3, WAV & video ringtones (w/ vibrate mode and external ringer on/off switch )
• Microphone mute option
• TTY/TDD compatibility
• 3-way calling
• 0.3 megapixels - VGA Camera
• Standard SD card slot
• Removable 1200 mAH Lithium-ion Battery (Talk time up to 4.5 hours - Standby time 10 days)
• Infrared (IR)
• Size 111 x 58 x 22 mm
• Weight 154 grams (5.4 ounces)

Source