The new release is out. It came out at the end of last week, but we haven't sent out a newsletter announcement for it yet.. That will hopefully be out later this week.
In the meantime, I'd recommend checking out:
JFBConnect v6 release blog post
JLinked to JFBConnect migration guide
As for the additional stylings for the SCLogin module, we haven't documented those well yet. However, here's a quick overview:
* We include the 'default' and 'sourcecoast' theme CSS files
* They are located in /media/sourcecoast/themes/sclogin/
* To create your own theme, copy the CSS file from that directory to /templates/<YOUR_TEMPLATE>/html/mod_sclogin/themes/
* Rename the file to something like "mystyles"
* In the SCLogin module, for the setting of the theme, you should now have an option for "mystyles". Select that, and your CSS file will be included automatically, and should make creating overrides much simpler.
I hope that helps, but if you have any other questions, just let me know.
Thanks,
Alex