Next up after this act, we'll read ACT 6 ACT 6 ACT 1.
Then that continues until ACT 6 ACT 6 ACT 5, followed by ACT 6 ACT 6 ACT 5 ACT 2 (retroactively making ACT ACT 6 ACT 5 into ACT 6 ACT 6 ACT 5 ACT 1). Then ACT 6 ACT 6 ACT 6 ACT 1, and so on.
Eventually Hussie will have to label his acts in shorthand, with titles like "ACT 612.5.1" and "ACT 641.3", because the string of sixth-acts-within-sixth-acts will become too unwieldy to read in titles ("ACT 612.5.1", for example, is short for "ACT 6 ACT 6 ACT 6 ACT 6 ACT 6 ACT 6 ACT 6 ACT 6 ACT 6 ACT 6 ACT 6 ACT 6 ACT 5 ACT 1").
The point I guess I'm trying to make is this: Rejoice, ye Homestuck fa