Amazon recently sent invites to the media for a press conference on September 6th in Santa Monica, California. While the topic of discussion was not revealed in the invitations, it is widely speculated that Amazon will finally unveil its next-generation Kindle Fire tablets. Back in June, several sources reported that Amazon was prepping two new tablets, an updated 7-inch slate to replace the current Kindle Fire, and a brand new 10-inch tablet that Amazon he been working on for more than a year. We’ll soon find out if these reports are accurate. Stay tuned…