I did not read too much about it. I've only seen R3: Re:surrection, so I thought it will be third season. Nothing to think about until release. Now I've checked and O.O I did not know there were another 3 movies already. Ok, more or less recaps, but still it would be good to see that story again (in much shorter version). I'll wait till final Re-lease and watch all 4 together at once.