Name: CUL (カル Karu)
Voice Base: Eri Kitamura
The name is short for "Culnoza", a collaborative group organized by Hiro-P. She was introduced in "CUL makes Revolution!" (The video bellow).
CUL was featured in the shows introduction:
CUL is also the mascot of "CUL project; offical",a website designed to promote Cul to make her offical.
On June 8th, 2011, CUL was revealed to be in the process of becoming an actual Vocaloid. It is not known when she will be released. She is confirmed Vocaloid 3, this means she will not be released before late September, this is when the Vocaloid 3 engine is released.
About CUL's voice provider, Eri Kitamura:
Eri Kitamura is a Japanese voice actress and singer, who was born in Tokyo, Japan, 1987 August 16. She is also known to be an amateur manga artist in her spare time. She will be the voice provider for VOCALO Revolution's CULnoza, a mascot that was previously vocalized by the Vocaloid2 VY1, a feminine-like voicebank.
Source: Vocaloid Wiki