It adds the "functionality" of logging in as 'appear offline' which I'm not sure if you can disable.
It also comes as two (2) patches, so I'm not sure which one does what the readme is quite vague.
Ive downloaded the BETA version on to my daughter's 'puter an it looks cool, but when does the FULL version of '6' come out? - thought it was supposed to be this month?