We have planned to jump directly to MariaDB 10.2 but it depends on many details. We can track the status in this issue.
- Bug#840857: mariadb-server: MariaDB 10.1? Olaf van der Spek
- Bug#840857: [debian-mysql] Bug#840857: mariadb-serv... Otto Kekäläinen
- Bug#840857: [debian-mysql] Bug#840857: mariadb-... Olaf van der Spek