Major Pokemon announcement coming on the 8th?

Pokemon fans awaiting the next generation of the series may not have to wait much longer.  The official Japanese Pokemon website has updated with a tease for an "important announcement" coming on the 8th.

To show this is probably not just a throw-away reveal in regards to merchandise or other non-gaming related news, the North American Twitter is also teasing something big on the 8th.  Whatever the announcement may be, it won't be limited to one region.

If this truly is alluding to the next mainline Pokemon entries, could this signal a major shift in the series? Will it finally go full 3D, or keep the 2D spritework?  Could it have advanced online functionality?  There is much to speculate about, but not much time to do it.  We'll keep you updated.