Sakura Quest: Maybe? The main cast is composed of girls, and the writer is certainly familiar with homosexuality
From my minute of research, I found out that the writer is Masahiro Yokotani, who has a pretty solid body of work (including Toradora episode 19 oh my god), but when it comes to yuri he's only gone with subtext.
If we use Shirobako as an estimate Sakura Quest will probably have some fun character interactions that yuri shippers will take to the logical extreme.