Filippo Dossena not directly, looks like an oversight,

but we have localized Title args in, for iOS8:
https://github.com/aerogear/aerogear-unifiedpush-server/blob/master/push/sender/src/main/java/org/jboss/aerogear/unifiedpush/message/sender/APNsPushNotificationSender.java#L120

If you wanna add loc-key and it's loc-args usage, feel free to send a PR against the server. We are happy to merge it for UPS 1.1.x