Here's one done by a Chinese modeler named Chen, who posted the work on his Taobao Blog.
And a BB Senshi version, done with many personal preferences inserted from the same modeler.
The movie will be released on September 18th. The Gunpla should be announced some time in July, or earlier than that depending on Bandai's planning. ^^
Images are from Chen's Taobao Blog: HG 1/144 version, BB Senshi version.