For Dutch readers just read here 
For English I translated:
The Londen gamestudio Splash Damage is already thinking about making Brink 2 & Brink 3, that will be released in spring 2010. The developers of Brink says that it can be made into a great franchise.
However Splash Damage is still in the middle of the development on Brink, the first game this studio makes on his own, Richard Ham was already taling about ideas on Brink 2 & 3 in an interview with Eurogamer.net
However Ham is talking about ‘big plans’ for the continuers, he didn’t said anything about what this possibly could be. But it is highly possible in this first version they will also already make sure the storyline can walk on to the other games.
The first part in this franchise offers the possibility to play in online and offline mode, where the storyline also in the onlinemodus will continue. After all both sides will be played by players, but how this system is made isn’t known yet.
I hope it will be a good game but it can never be as good as ET 