The ceo said it was possible in an interview. Even if not you could still charge at 3.3kw with just a smart adaptor, possibly incorporated into the bike.
I rememeber that, too and I wasn't sure whether he meant just the cells of the battery are capable of being charged faster or if he meant that the whole bike can be recharged faster. In other words, since the bike is supposed to be recharged @3.5 kW or 3.3, I suspect that the charging port is not capable of withstanding more than that because they didn't see the need of using one that can.
Here is what is likely to be that interview: @24:40 he says that
the bike can be recharged more than twice as fast and that they have used a slightly faster charger, so it sounds like everything is ready for a faster charger, but since he hasn't been specific, I would be cautious passing more current through that charging port.
There is a writing engraved in the charging port cap which reads "360V", so apparently the charger brings the current to that voltage from 230 V or 110 V. As far as I know, a higher voltage means that the cables, plug prongs etc. can be thinner because, given a certain power, the higher the voltage, the lower the current; when the app allowed us to set the charging current, the maximum was 10 A, while the charger used to get roughly 16 A from the socket in the wall: 16 A @ 230 V is roughly like 10 A @ 360 V. I'm neither a professional nor an expert but the prongs of the charging port still look pretty thin to me. I wouldn't be surprised if the option of a possible future faster charger came with a dedicated charging port.