When did who say what? Are you asking about when did BioWare say they were going to work on their own IP only OR LucasArts stating their intent to continue the KotOR franchise?
Since it was only last November when a LucasArts VP stated LA wanted to grow the KotOR franchise I tend to believe we will see at least one more KotOR game. IMO it's just a question of when and what type of game it will be.
By this time next year though if we haven't gotten an official KotOR announcement out of LucasArts or some other reassurance that KotOR is still in their plans then I will start thinking their plans have changed and KotOR may not have a future.