"Is there going to be another BATMAN film - if so, when will it be out?
Yes, there will be another film. BATMAN is WB's biggest and most profitable franchise and they are not about to let it die.
The next film "Intimidation Game" is currently in pre-production. A 2005 release date has been discussed.

"Who is writing the script and who will direct?"
Christopher Nolan of MEMENTO and 2002's INSOMIA fame will be directing this current installment of Batman.
David S. Goyer will be writing the script. His screen credits include all the BLADE movies, 1996's The Crow: City of Angels, and 1998's Dark City. In addition to his screen writing career, he is also a popular writer of comic books, including JSA (Justice Society of America) which he writes with Geoffrey Johns.

"Will the next movie be a sequel to the last four films?"
As far as we know this will not be a sequel but a restart of the whole franchise. Things could change though.

"Who will play The Batman?"
Christian Bale will don the cape and cowl. Bale's early credits include Disney's NEWSIES, and SWING KIDS. Bale regained media attention for his roles in AMERICAN PYSCHO and REIGN OF FIRE.

"What is the deal with this BRUCE WAYNE TV series?"
It is a proposed series that would portray a young Bruce Wayne on his way to becoming Batman. Produced by Tollin-Robbins Productions, it is now on "hold," and believed to be shelved.