I've begun wrapping up planned features for the 0.3 build. Per usual, 0.3 build will be released via the dev build first and then pushed down to the stable build after that. I expect level 6 and 7 to be released along with it and polish level 5 as its contents are not quite there yet.
As for the time of release, it is difficult to say - it is "done when it is done" - but shouldn't take months like 0.2 did.
Hope this helps and have fun!