On November 20, 2014, when VOCALOID4 was officially announced, there was a debate about a possible V4 update for flower.
On April 23, 2015, it was announced that v flower would receive an update for the VOCALOID4 engine.  Her updated design was illustrated by Miwasiba. It was also revealed that owners of her V3 voicebank would receive a discount.
On July 1, it was announced that she would be released on July 16. There would be two different boxed versions, the regular VOCALOID4 package and one for Cubase.
Early sales of Flower occurred at Vom@s 32  and trial versions were handed out, along with a golden card.
According to Gynoid's twitter, flower's diphones were repaired and more triphones were added.
v4 flower did not receive any demos prior to her release, unlike her v3 release.
V4 flower was highlighted as an example of a Vocal which shows superior and unique singing talent via her specialisation in rock. She was among 5 recommended vocals by the Vocaloid staff out of the 50 vocals they sold for this reason.
Software issues as noted:
Her voice tends to overpower the BGM and in consequence requires a more detailed edition in the final mix.