Seems like the shounen(boy's) light novel series
Steel Maiden Sarah: Diamond Princess (Choukoujo Sarah) by
Terada Tomonori (author) and
Ein (illustrator) is planned for an anime adaptation.
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超鋼女セーラ
Choukoujo Sarah
Steel Maiden Sarah: Diamond Princess
少年向け小説(ライトノベル).
Shounen light novel series (light novel series for boys).
The light novel series is published under the shounen light novel label
HJ Bunko.
Currently there are 7 volumes released of this light novel series.
Covers:
Also a light novel series titled
Choukouseijo Becky (超鋼聖女ベッキー) is serialized in the male oriented light novel magazine
Charano! (it was previously serialized in the male oriented light novel magazine
Novel Japan).
There's currently 1 volume released of this light novel.
Covers:
Author: Terada Tomonori
Illustrator: Ein
Genre: Shounen
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Source:
MoonPhase Diary
I would like to wait for an official announcement...
If this really gets an anime adaptation it would be the first boy's light novel series from the shounen light novel label
HJ Bunko to get an anime adaptation.