Improved familiars and Arctypes

I love the new familiar rules as they are now more balanced with animal companions.
just wondering when Improved familiars and Familiar arctypes are coming back ?

what would you like to see.

angels ?
demons ?
lycanthropes ?
fey ?

I suspect with the witches coming in the newly announced 2nd edition advanced players guide we are pretty likely to see something like this as witches were always heavily familiar based.

I wish there was something for sorc/wizards in this edition. After all the Quasit description talks about them being familiars, but there is no description of how any class can have them as a familiar. I think some editor should have caught that.