The Nokia 305, probably an Asha device, and Nokia 610 have passed through what supposedly is an Indonesian version of the FCC. The 305 is known as the RM-766 and 610 as RM-835.
The Nokia 305 will likely be a touch and type device like the 300 and 303. No word yet on whether or not it’ll be the first Meltemi device, so S40 is likely. The 610 is rumoured as a Lumia device, which may just be untrue. Seeing as the BlackBerry 8230, which launched way back in 2009, is also listed there, they can make mistakes, it could likely just be the 9220 or 9320 instead. Months ago there was a supposed Lumia 601, which also doesn’t exist as there was a Nokia 601T meant for Asian markets only, which is exactly what the 610 could be.
There’s no Lumia prefix added to the name, it hasn’t shown up on any application statistics sites, like the majority of other Windows Phone devices did and the only mention of the 610 ever is on this site. No doubt it exists, but there’s no proof that it’s a WP device. So, we’ll have to wait until MWC to see whether or not it is in fact a Lumia.