all winner a10 based tablet upgrade to jelly bean.

nxg a10 tab, veedee d10, micromax funbook, karbonn smarttab all seemingly have similar hardware. has anybody ported jelly bean to any of these. I am certain none of the companies have communicated whether they will release a jb rom, but somebody has been able to get jb on their tablets yet? some of the refinements of jelly bean do look pretty neat.
(couldn't see a thread already abt it opening new. )