Indonesia's FCC counterpart, Postel, is proving to be an interesting source of info on new phones. Their database contains two Nokias that aren’t official yet - the rumored Nokia Lumia 610 and a Nokia 305, which was unheard of until now.
Now, the database lists only the most basic info on the phone (if even that) but with rumors floating around that Nokia will announce three smartphones and three feature phones at the MWC, these numbers give us a glimpse of what will be announced.
The Nokia Lumia 610 is one of the phones expected to be unveiled in Barcelona and this listing confirms that it's a real device. Postel site reveals that the 610 will have 2G and 3G connectivity, Wi-Fi and Bluetooth but that's it (they only test if wireless devices are within specs, so that's all the info we can hope to get).
The Nokia 305 is probably an Asha device, but there's not even Wi-Fi/Bluetooth info on it. Judging by model number alone, it should take over from the Asha 303 as the new top of the line feature phone by Nokia.
A previous rumor claimed that a different set of Asha phones will be announced at the MWC, but there's no way to know for sure (other than waiting for a couple of weeks).