In a case of better late than never, Sony just released its August security patch for three of its devices: the Xperia XA1, XA1 Ultra, and L1. There isn’t really anything new besides bumping up its security level to August 5, 2017. To check if you have the latest build this should be: Unfortunately, all phones still use Android 7.0, too. But security patches are important and it looks like you’ll have the latest for now. Let’s hope it doesn’t take too long for the September security patch to show up.
Source: GSMArena