As far as we can tell from the tutorials theres no way to have longer patterns? That would be extremely useful for anything with longer notes. The default pattern size is so small that just three or for long piano notes fills the whole box.
The maximum pattern length is currently limited 32 units, with the longest possible note being 128 units. How long of a pattern would you like to have, hypothetically? Keep in mind that the pattern length is universal for the song and cannot be adjusted per pattern or per instrument.