A few things to note.
I don't recognise this place. Do you think it could be part of the speculated Golden Forest? The trees seem to indicate as such.
Also, Typhlosion and Meganium are fighting against a Feraligatr and a Tyranitar. Assuming this battle is you and Soul .vs. Silver, this indicates one of two things.
1) Silver has a Tyranitar -> Line-up changes!
2) Silver doubles-up with someone with a Tyranitar (Giovanni?) -> Plot changes!
Either way, it's pretty cool.
Also, that pokemon smashing the rock is not Feraligatr, it's green. It could well be Tyranitar, which suggests you can perhaps get him earlier. Again, yay.
That battle won't come from part of the storyline >_< Check top right