An updated list of all the Vocaloid release dates, I'll try to update as new ones come out.

Vocaloid 1

Leon - January 15, 2004

Lola - January 15, 2004

Miriam - July 1, 2004

Meiko - November 5, 2004

Kaito - February 17, 2006


Vocaloid 2

Sweet Ann - June 29, 2007

Miku Hatsune - August 31, 2007

Rin Kagamine - December 27, 2007

Len Kagamine - December 27, 2007

Prima - January 14, 2008

Gakupo Kamui - July 31, 2008

Luka Megurine - January 30, 2009

Gumi - June 26, 2009

Sonika - July 14, 2009

SF-A2 Miki - December 4, 2009

Yuki Kaai - December 4, 2009

Kiyoteru Hiyama - December 4, 2009

Big Al - December 22, 2009

Tonio - July 14, 2010

Lily - August 25, 2010

VY1 - September 1, 2010

Gachapoid - October 8, 2010

Iroha Nekomura- October 22, 2010

Piko - December 8, 2010

VY2 - April 25, 2011


Vocaloid 3

Mew - October 21, 2011

SeeU - October 21, 2011

Tone Rion - December 16, 2011

Oliver - December 21, 2011

CUL - December 22, 2011

Yukari Yuzuki - December 22, 2011

Bruno - December 24, 2011

Clara - December 24, 2011

IA - January 27, 2012

Lapis Aoki- April 6, 2012

Tianyi Luo- July 12, 2012

Galaco - August 5th, 2012

Mayu - December 5th, 2012

Avanna - December 22nd, 2012

ZOLA PROJECT (WIL, YUU, KYO) - June 20th, 2013

Yan He - July 11th, 2013

YOHIOloid - September 10th, 2013

MAIKA - December 18th, 2013

Merli - December 24th, 2013

Macne Nana - January 31, 2014

kokone - February 14, 2014

anon - March 3rd, 2014

kanon - March 3rd, 2014

v flower - May 9th, 2014

Tohoku Zunko - June 5th, 2014

Chika - October 16th, 2014


Please let me know if I missed any or got one wrong!