Phonescoop just spotted an odd slider from Pantech in some FCC filings. The phone, officially called the Pantech PN-810, has three layers. Sliding it up reveals a standard keypad while sliding it sideway reveals a QWERTY keypad. It has EVDO, Bluetooth, and a 2.1-megapixel camera. Not sure what Helio will call it, but it looks quite promising.
Dual-Sliding Messenger Phone for Helio Spotted on FCC Site [PhoneScoop]