With the conference expected to be next wednesday, this would have been traditional Apple form. As I write this, there is nothing to say, that the invites are not in the post, but it is highly unlikely that the launch will strike October 17th.
The company is still pushing forward with their global launch of the iPhone 5, and will most likely launch a new iPad before christmas. This story will be updated as and when more information becomes available.
Until then, let the staff here know if your interested in a new iPad.