We don’t know if it will be more than what was broadcast live.
Reddit user /u/GESOMETAL put together some information and he thinks that it points to BMTH being the “To Be Announced” opening band at the BABYMETAL shows in November.
This weekend signs at stations in Japan appeared promoting the album release in October as well as the shows in November.
It was recorded at LEGEND M, but they sang the regular version there, so they had to do cuts so you can’t see Su isn’t singing the English chorus.
Due to Typhoon Krosa, Mountain Stage Sets (including BABYMETAL’s) are Expected to be Delayed/Cancelled at Summer Sonic Osaka [UPDATE: set delayed 30 minutes, but will play]
They were supposed to play at 6:50PM, they have not announced the new time yet. It is looking possible they may not even play.
It is already available in Australia, so it seems it’s a timed release, as previous singles have been. It should be available in each time zone as soon as yours reaches Friday.