Well, new girl Fiona aside, I guess that means character updates are going to be the following:
January 18, 2018: Luna
April 12, 2018: Tamaki
July 5, 2018: Leifang
September 27, 2018: Fiona
December 20, 2018: ???
March 14, 2019: ???
June 6, 2019: ???
August 29, 2019: ???
November 21, 2019: ???
February 13, 2020: ???
Now, if DOAGamesareCool were to, say, show proof that they add in slots afterward and that 6 isn't necessarily what's left, then I'll probably be a bit more forgiving, but until then, all I know is that if they add in two new girls after this, that means the chances of all the cut girls getting in is decreasing.
Let's hope one of the cut girls gets in at a future date (particularly Mila, Rachel, and Tina, the former two because they were screwed out of even having a vacation at all as newcomers to the franchise thanks largely to that stupid wallpaper poll for Xtreme 3, and the last one because her chances of even appearing in DOA6 are likely very low right now thanks to comments made by Tom Lee and Shimbori that implied that they created Diego specifically to cater to "American sensibilities", despite Tina, being a very patriotic American lady who was the embodiment of the American dream, would have appealed to American sensibilities by default, so XVV is pretty much Tina's last chance at appearing in ANY DOA games.).