From this gameplay videos and lack of info though, it's unclear of the new weapons will appear in the open beta. (screenrant.com)
Lack of info on Online Service: So yes we know that Nintendo plan to make players pay for their Online Service shortly after launch after a trial period but there's so much we don't know. (gameondaily.com)
I have doubts... there is a very high chance that it will be another anime based «fighter», if its soul calibur there will likely be some leaks already (too big to ignore), lack of any info suggest that it will likely be some minor / or already known game and thus not worth leaking. (8wayrun.com)