a letter posted to fan site LeverageFans.com is anything to go by. Among other things, Executive producer Dean Devlin says:fans may have some cause for concern if
As of the writing of this letter, we still do not know if there will be a season six of our show. Just as we didn’t know when we created the last three episodes which are about to air. Because of this uncertainty, John Rogers and I decided to end this season with the episode we had planned to make to end the series, way back when we shot the pilot. So, the episode that will air on Christmas is, in fact, the series finale we had always envisioned.
This sounds pretty final, but Devlin does note that:
This is not to say we would not do a season six should we get the opportunity. Everyone involved with the show, from the cast, the crew, the writers and producers, would like nothing more than to continue telling these stories.
Of course, we haven't heard anything official yet, but this certainly doesn't seem like good news for the series. Any theories as to what is going on? Is there any hope for fans of the series? Let us know your thoughts in the comments!