All I could find so far is this (open) Sun bug/RFE entry with 425 426 votes:
http://bugs.sun.com/view_bug.do?bug_id=6530906
It's in third place in the list of RFEs.
Tons of people have stated that it will be included in Java 7...but does anyone have any clear information on whether MiGLayout will be included?
Answered
Well, it seems Chad has a point - it's not on any official list anywhere, and time is sure ticking away, so unless something big happens, it's safe to say MiGLayout apparently will not be included in Java 7, literally in spite of 426 votes from the community. Too bad.