Blackberry has started pushing new update with security patch of May month. It also includes brings several bug fixes and performance enhancement in this update.
— BlackBerry SIRT (@BBSIRT) May 5, 2017
The update is currently only hitting the unlocked units purchased directly from ShopBlackBerry.com. As with every update, it may take some time to reach you but if you want it early before appearing push notification, you can manually check it.
So we can say, Blackbery is doing pretty decent job by providing latest Android updates. However, some device lately received the April update, but it did inexplicably arrive later than it has in previous months. In any case, hopefully, if you haven’t received the April update as of yet, you’ll just jump right into the May update instead.