Hi, no, unfortunately, there is no ETA for this. It is about programming, you can think, you will do some feature in two days and then you find that such feature is in conflict with another feature and the time will be moved from two days to two years. So this is why I don't have any ETA.
Unfortunately, we are living in time of nonsense changes. So because of nonsense changes (Facebook API, Google API, Joomla!, PHP, SQL, etc.) it all takes so much time. E.g. it is planned that in newest Joomla! that strict standard rules for MySQL will be set, which means, overwriting over 40% of all SQL queries in all extensions. The same with FB API. Newest PHP library must be set and because of this, all the helper classes and functions need to be rewritten.
Unfortunately, first of all, I need to overwrite all the code to meet Joomla! newest rules, so basic functions work in Joomla! then I can take a look at the external libraries. This is really hard, you spend e.g. some months of work to make the extension ready e.g. for Picasa and then somebody close all the Picasa project so the feature is useless
So yes, with external libraries, it is always not easy

- I hope I will find time to take a look at the new FB API soon, but I really cannot say any ETA
Jan