Saber Alter Shinjuku Casual Outfit?

Until the moment is a no,jp servers hasn't released it and at this point I don't think they will do it,I feel you bro I also wanted that outfit

Salter's Shinjuku outfit>Jalter's Shinjuku outfit

Feels really bad.

I think the costume you are referring to is sorta tagged to Altria Saber alter (Rider) which you can roll for in summer. You won't get it on saber alter.
Waifu?

Sorry, they haven’t released one yet :(

We will probably get a salter Shinjuku outfit the same year we get a padoru Santa Nero welfare servant for Christmas T.T