2019年3月M50SR-SとM60SR-Sが発売されます。
1ヶ月後の4月にM100SR-SPとSM135-S、SM135-S LIGHTも発売されます。

In March 2019, M50SR-S and M60SR-S are going to be released.
And one month later, in April, M100SR-SP and SM135-S are going to be released.