Got this from somewhere. Enjoy Jakarta Busway Map (Peta Rute Busway TransJakarta)
As today (Dec 08), Jakarta has 7 lines / corridors of Busway. Ticket fare is still IDR 3,500 per trip to anywhere including many connections. They plan to raise ticket fare on 2009 along with new lines opening to IDR 5000-6000, or if they can implement smart card / touch card (like Oyster Card or EZ-link) then I believe they want to charge you on distance basis.
New planned corridor route for 2009 and blog can be found at my latest post here.