Can someone tell me

There's apparently going to be another run of these same GSSR banners soon-ish (Jan-Feb), but they'll just be normal banners rather than being paid to guarantee an SSR. After that he'll be on rate-up for one day during Chaldea boys 2019 (March?), but he'll be together with Proto Arthur, so more (possible) spooks there. His next one after that I believe will be in the Go West rerun next year, he'll be alone for that, but it's so far away....

http://fate-go.cirnopedia.org/summon.php#2017 Looks like Valentines day summon. Remember, we're 2 years behind so look at 2017.