Take a look at page 4 onwards of this thread
http://gbatemp.net/index.php?showtopic=34225&st=45 where there are some valuable comments about the situation.
In short:
-The English version is allegedly coming out in one or two weeks. (I have queried Winsunx about this and am awaiting a response)
-Nobody has the G6 Lite english version in stock as the M3 Team say that it hasn't been released. (How some poeple have the English version is unkown)
-An updated G6 lite is allegedly in the works (this seems to be referring to the 8Mb version)
-The english version will ship with the 3 other coloured cases (light blue, navy and black), the Chinese version only has 1 random coloured case.
-It is still being debated if the english software runs on the Chinese version (some have it working, others do not) (M3 Team say that it doesn't work)
-You can run the 4.0b software if you use the old loader. Yes, you end up with a hybrid but it does work. See this thread for details -
http://gbatemp.net/index.php?showtopic=34301 - There is also another workaround that has been discussed but its effectiveness is unknown.
-It is unclear whether or not M3 team will release combined versions of the software in future or if you will have to use the chinese versions for future updates if you own the chinese G6 Lite. (It doesn't look good as far as cross version compatability goes since the chinese and english versions of the normal G6 are not compatible)
-The M3 team claims to have only released one version of the hardware (ie. the chinese version). This is further confusing matters as it is now very unclear as to how for some people the English software works and for others it doesn't, if there is only one version. (I guess someone is talking rubbish)
//if anyone knows more or if i'm wrong please correct me. thanks
///i have asked winsunx for clarifcation on the above issues and am awaiting a response
////yes i stole all this info from other threads but though it might help some people to centralise it
/////kudos to those that experimented and queried people to find out all the above information
edit: edited quite a few times for detail and clarity