There's no specific release date, 0.8.6 will come when a reasonable amount of
bugs are fixed.
As it should be. There is nothing worse than a released rushed to meet some arbitrary deadline that ends up turning off players because of usability or compatibility issues. The OA team released 0.8.5 earlier this year and as long as 0.8.6 is release by year's end no one can say they are slacking off.