When will we see the patch? (a question for devs)

The community seems to request the stability patch and some exploits fixes or at least clarifications. The current concerns are:

1) 2nd wave corrosive cube allows to trigger traps through it. Is it intended? If no, it should be fixed.

2) Piston can kill the harvester right at the game start. I suppose pistons should not be able to do it.

3) Replay +30s and -30s buttons break the entire replay.

4) On replays dead harvester keeps walking at one spot as it is alive.