If everything I've heard is not a rumor, then yes, there is going to be a 겨울왕국 2. Some say no, though, so Idk...
link Oh, and I know this is just a fanfiction, but it helps with all the cravings and whatnot (for me anyway). It's pretty much unofficial, yet an awesome mini sequel:
link It's actually the first 겨울왕국 fanfic I've read so far. xD
I can't wait to read 더 많이 겨울왕국 fics!! <3