Although we don't know much about what other changes have been included in the update aside from the usual Android Oreo improvements, we do know for sure that it includes the February security patch.
Sony has yet to confirm the rollout, but we don't think that will happen. Still, some Xperia XA1 users report they have successfully captured the update. Hopefully, the deployment will continue so that everyone using Xperia XA1 family smartphones will get it as soon as possible.
Keep in mind that the update is pushed OTA (over the air) and weighs in at 900MB, so free up enough storage before attempting to download it. Also, make sure that your battery is at least half charged since the installation may take some time.
source: XperiaBlog
