Honestly I thought at first that it was toss up between Claire, Emma, and Linda.
Claire and Linda both working at Super-Secret Sci-Fi HQ of Secret Stuff could potentially give ample opportunity to give either one of them some sort of comicbook style radiation exposure (or other wacky hi-jinks / tech tools). Claire perks up during the news report about angel, but feigns disinterest. Angel immediately recognizes the MC and even uses his name before he introduces himself to her. Her build is not a perfect match but it is similar to Claire's as well (as well as Emma and Linda) and we know Claire does some exercise (at the very least with yoga).
Another thing of note is that Angel shows up in the walking routes close by the apartment. Even the phone tips tell you to wander around by your place at night.
As for Emma and Linda, well we really don't know too much about them. Linda works with Claire, likes younger guys, and wants not just Claire's job, but really everything Claire has. Emma is Claire's sister, has moved and traveled a lot, and is a habitual job hopper (but seems to like doing massages).
Not so sure anymore. Could be the dev just trying to throw us some curveballs and lead us down one line of thought with subtle hints just to revel it's just circumstantial coincidence(s) and is a new character all together.
Or it's just that cute new red-headed coffee shop gal whose name I forget at the moment.
nah there is mentioning when watching the news, that a developer is working on a new game for 2019, that is most likely a confirmation from Faerin that he has something new planned. If he has that planned he shouldn't add any more girls for MotH if he does that means completion keeps being further away. At least my thoughts
I guessing it's probably more along the lines of that's when Faerin is currently planning MotH to be fully completed. At that point it would still technically be considered a "new" game and (obviously) the work on it is still on-going currently. Probably just a little hint telling us when to expect it to be all done.