Question about Sony Xperia 1 V

Since my question seems to be misleadingly worded, I'll rephrase it: As far as I know, the Xperia 1V had Android 13 at launch and has already been (exemplarily) supplied with Android 14. Does anyone know whether Android 15 is really the last promised version update and whether the device will then only be supplied with security updates for another year? Does anyone have any experience of this with previous Sony Xperia smartphones?