LEGO has released a mini movie featuring the Battle of Hoth. In the video, new elements that were not in previous sets were shown including an Ion Canon, a Power Generator and a new Entrance Gate. This leads to a possibility that the video could potentially be showing a few parts of the rumored UCS LEGO Star Wars Echo Base. This set is expected to be released sometime in October 2015.
Other components in the video shows a Wampa Cave, AT-AT and Snowspeeders. These components were previously available in other official LEGO Star Wars sets. But they will be probably added to the new UCS Hoth Base set!
Thanks to Jon for the news.