Oh yes. Oh, there are plans. Many many plans.
The handbook you have gotten your hands on is indeed outdated at the moment, and newer content has been released onto LORE since the .pdf handbook was released several years ago. This lore is also being compiled into more than one new handbook, but until they are released the most current lore is reflected on LORE.
As a note, many of the names changed when we released Version 3 (V3 update) a couple of years ago. A couple of the names were close to location names from other realms and fantasy worlds, and so there was a move away from any potential copyright infringements. A few were also changed for other reasons, I believe, though an example does not come immediately to mind. You'll still see the old names crop up now and then (for example, Port Hempstead was once Port Hampshire, and the Silkwood was the Sielwood).
The old handbook does still have some good info, and it's a nice reminder of how much the world has grown. However, at present I'd recommend just keeping a .pdf version on your computer and referring to LORE for the most current world information, or asking any specific questions in the Ask A Gamemaster forum. Coincidentally, this is also where you can see the "Ask the Loremaster" threads, documenting many of the LORE updates as we move over new information!
