Hi,
after today's update&&upgrade procedure everything is detected fine.

Oct  3 11:23:14 rsmol-laptop modem-manager: (ttyACM0) opening serial device...
Oct  3 11:23:14 rsmol-laptop NetworkManager:    SCPlugin-Ifupdown: devices added (path: /sys/devices/pci0000:00/0000:00:1d.1/usb6/6-2/6-2:1.2/net/usbpn0, iface: usbpn0)
Oct  3 11:23:14 rsmol-laptop NetworkManager:    SCPlugin-Ifupdown: device added (path: /sys/devices/pci0000:00/0000:00:1d.1/usb6/6-2/6-2:1.2/net/usbpn0, iface: usbpn0): no exported connection
Oct  3 11:23:14 rsmol-laptop modem-manager: (ttyACM0): probe requested by plugin 'Nokia'
Oct  3 11:23:15 rsmol-laptop modem-manager: (ttyACM0) closing serial device...
Oct  3 11:23:15 rsmol-laptop modem-manager: (Nokia): GSM modem /sys/devices/pci0000:00/0000:00:1d.1/usb6/6-2 claimed port ttyACM0
Oct  3 11:23:15 rsmol-laptop modem-manager: Added modem /sys/devices/pci0000:00/0000:00:1d.1/usb6/6-2
Oct  3 11:23:15 rsmol-laptop modem-manager: Exported modem /sys/devices/pci0000:00/0000:00:1d.1/usb6/6-2 as /org/freedesktop/ModemManager/Modems/0
Oct  3 11:23:15 rsmol-laptop NetworkManager: <info>  (ttyACM0): new GSM device (driver: 'cdc_acm')
Oct  3 11:23:15 rsmol-laptop NetworkManager: <info>  (ttyACM0): exported as /org/freedesktop/NetworkManager/Devices/2
Oct  3 11:23:15 rsmol-laptop NetworkManager: <info>  (ttyACM0): now managed
Oct  3 11:23:15 rsmol-laptop NetworkManager: <info>  (ttyACM0): device state change: 1 -> 2 (reason 2)
Oct  3 11:23:15 rsmol-laptop NetworkManager: <info>  (ttyACM0): deactivating device (reason: 2).
Oct  3 11:23:15 rsmol-laptop NetworkManager: flush_routes: assertion `iface_idx >= 0' failed
Oct  3 11:23:15 rsmol-laptop NetworkManager: flush_addresses: assertion `iface_idx >= 0' failed
Oct  3 11:23:15 rsmol-laptop NetworkManager: <info>  (ttyACM0): device state change: 2 -> 3 (reason 0)
Oct  3 11:23:15 rsmol-laptop NetworkManager: <info>  Activation (ttyACM0) starting connection 'Telefónica O2'
Oct  3 11:23:15 rsmol-laptop NetworkManager: <info>  (ttyACM0): device state change: 3 -> 4 (reason 0)
Oct  3 11:23:15 rsmol-laptop NetworkManager: <info>  Activation (ttyACM0) Stage 1 of 5 (Device Prepare) scheduled...
Oct  3 11:23:15 rsmol-laptop NetworkManager: <info>  Activation (ttyACM0) Stage 1 of 5 (Device Prepare) started...
Oct  3 11:23:15 rsmol-laptop NetworkManager: <info>  Activation (ttyACM0) Stage 1 of 5 (Device Prepare) complete.
Oct  3 11:23:15 rsmol-laptop modem-manager: (ttyACM0) opening serial device...
Oct  3 11:23:15 rsmol-laptop modem-manager: Registration state changed: 1
Oct  3 11:23:16 rsmol-laptop NetworkManager: <info>  Activation (ttyACM0) Stage 2 of 5 (Device Configure) scheduled...
Oct  3 11:23:16 rsmol-laptop NetworkManager: <info>  Activation (ttyACM0) Stage 2 of 5 (Device Configure) starting...
Oct  3 11:23:16 rsmol-laptop NetworkManager: <info>  (ttyACM0): device state change: 4 -> 5 (reason 0)
Oct  3 11:23:16 rsmol-laptop NetworkManager: <info>  Activation (ttyACM0) Stage 2 of 5 (Device Configure) successful.
Oct  3 11:23:16 rsmol-laptop NetworkManager: <info>  Activation (ttyACM0) Stage 3 of 5 (IP Configure Start) scheduled.
Oct  3 11:23:16 rsmol-laptop NetworkManager: <info>  Activation (ttyACM0) Stage 2 of 5 (Device Configure) complete.
Oct  3 11:23:16 rsmol-laptop NetworkManager: <info>  Activation (ttyACM0) Stage 3 of 5 (IP Configure Start) started...
Oct  3 11:23:16 rsmol-laptop NetworkManager: <info>  (ttyACM0): device state change: 5 -> 7 (reason 0)
Oct  3 11:23:16 rsmol-laptop NetworkManager: <info>  Starting pppd connection

I also installed modemmanager, not sure if it was due to that. So my problem solved.