Yes, indeed.
Who else can it be? 
But, this is what's bugging me for a long time, if Uruha is not in the pict, it means that she's no longer a Muscat, but Rin's still in that pict and on Ebisu's website, her profile is still there. That means, she's still an active Muscat member. That means, again, that she'll definitely come back someday as an yellow-suited Muscat member. So don't worry, she'll manage to come back to sing & dance along with the others. This is what I think. 
And for a second, I thought that the two beside Jessica are Ogawa and Ogawa's twin 
I sent a tweet for 16 Muscats to wish them Merry Christmas on 25th Dec, but no one reply it.
I wonder, how can L4verra got his tweet replied by Aino? 
Uruha still has her profile on the Muscats website (same as Sayoko), yet you can't click on it in the member page; you have to like type it in. However for Rin it's a little different. We don't really know what she looks like in the new Muscats uniform tho. Her new hairstyle was in display in the Christmas photo, but we haven't even heard a mention from her that she would come back. Maybe she'll come back either the next episode or sometime in the final months, but seeing her in this photo just makes me miss her even more...
Speaking of Uruha, she has very sharp teeth. Like, I have a photo of her smiling with her teeth (nsfw) and her teeth literally look fangy. It's really cute, especially for her, but if she bites me then I might lose blood

And about Aino retweeting me back, it's a result of two things. One, it took several tries for her to retweet me back (1 for 8 tries), and two, she was on a retweeting mood to respond to her fans at the time. So I caught her on a good time to get a retweet, and it paid off. She's also one of the only Muscats who knows English, besides Yuma, Sola and others, which is why I got lucky. I don't think Rina, Saemi, Rion, Ai and Anna know a lot of English to respond back though...I'd sure as hell like them to

Aino Kishi you are too freaking cool

