So when was update 1.9.0 released?

So I was researching on the dates on when they release their updates cause I'm wondering maybe when their going to release 3.0.0 and I noticed in the fire emblem heroes site that 1.9.0 is not in the schedule

2.9.0 - 9/5/2018
2.8.0 - 8/8/2018
2.7.0 - 7/9/2018
2.6.0 - 6/8/2018
2.5.0 - 5/9/2018
2.4.0 - 4/10/2018
2.3.0 - 3/7/2018
2.2.0 - 2/7/2018
2.1.0 - 1/11/2018
2.0.0 - 11/28/2017
1.9.0 - ???
1.8.0 - 10/9/2017

I was wondering if they either skipped this update for 2.0.0 or that they just did a silent update of it.

Also with this timeline check, we may if they stick with this pattern we might get it in late October to early November.