Vocaloid Wiki/On this day/December

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*2015: Rana V4 was released.
|3 =
*2007: Piapro officially opened.
|4 =
*2009: The original SF-A2 miki, Kaai Yuki, and Hiyama Kiyoteru were released.
|5 =
*2012: MAYU was released.
|8 =
*2010: Utatane Piko was released.
*2010: A seminar was held on Hatsune Miku.
|11 =
*Upcoming anniversaries include: Macne Nana V4 on the 15th, Tone Rion on the 16th, VY1v4 on the 17th, and MAIKA, JESSICA, MATTHEW, BRIAN, & SANDRA on the 18th.
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*2016: Macne Nana V4 was released.
|16 =
*2011: Tone Rion was released.
|17 =
*2014: VOCALOID4 was released along with one vocal available: VY1v4.
|18 =
*2013: MAIKA was released.
*2024: JESSICA, MATTHEW, BRIAN, & SANDRA were released.
|20 =
*Upcoming anniversaries include:
**OLIVER on the 21st, BIG AL, CUL, Yuzuki Yukari, and AVANNA on the 22nd, Bruno and Clara on the 23rd, Merli on the 24th.
**Kagamine Rin & Len V4X and English also on the 24th, SAKURA, ASAHI, SHION, & TAKU on the 25th, the original Kagamine Rin & Len and Kagamine Rin & Len Append on the 27th, and Luo Tianyi V4 on the 30th.
|21 =
*2011: OLIVER was released.
|22 =
*2009: BIG AL was released.
*2011: CUL was released.
*2011: Yuzuki Yukari was released.
*2012: AVANNA was released.
|23 =
*2011: Bruno and Clara were released.
|24 =
*2013: Merli was released.
*2015: Kagamine Rin & Len V4X and Kagamine Rin & Len V4 English were released.
*2019: Demonstrations for for are publicized on YouTube.
|25=
*2023: SAKURA, ASAHI, SHION, & TAKU were released.
*Merry Christmas from the VOCALOID Wiki!
|27 =
*2007: Kagamine Rin & Len were released.
*2010: Kagamine Rin & Len Append was released.
|28 =
*2009: The Nendoroid plush dolls of Rin, Len, and KAITO were set to be released.
|30 =
*2017: Luo Tianyi V4 was released.
|31 =
*2010: Hopeless Track/Innersoul released.
*2013: The VOCALOID1 vocals LEON, LOLA, and MIRIAM were officially available for purchase for the last time.
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