Looks like lawson has put up tickets for preorder, and the general sales will start in February.
And the tour has a headline
愛 am BEST, too tour 2019～イエス！ここが家ッス！～ (Yes! Koko ga Otssu!)
There will also be a meet and greet after the concert for a limited number of people at these venues:
Zepp Namba- 5 winners
Zepp DiverCity (TOKYO)- 5 winners
Sendai Darwin- 3 winners
Zepp Nagoya- 3 winners
Fukuoka BEAT STATION- 3 winners
To participate in the lottery, you have to buy the 3 disc version of 愛 am BEST, too from the fan club, mu-mo shop, or from a special event place. And only from purchases made by January 5th.
https://img-shop.mu-mo.net/img/event/ootsuka_1810.html