I've quickly searched through the header files and found a few symbols with the old naming conventions, so I thought I might as well share them... ;)
Sound.hpp:123 GetBuffer -> getBuffer
CircleShape.hpp:99 GetPointCount -> getPointCount
ConvexShape.hpp:85 GetPointCount -> getPointCount
ConvexShape.hpp:98 GetPointCount -> getPointCount
ConvexShape.hpp:81 SetPointCount -> setPointCount
RectangleShape.hpp:86 GetPointCount -> getPointCount
Shape.hpp:204 GetPointCount -> getPointCount
VertexArray.hpp:78 GetVertexCount -> getVertexCount
VertexArray.hpp:94 GetVertexCount -> getVertexCount
TcpSocket.hpp:230 GetRemotePort -> getRemotePort
Http.hpp:343 SetHost -> setHost
Http.hpp:376 SetHost -> setHost
SoundRecorder.hpp:218 IsAvailable -> isAvailable
VideoMode.hpp:204 IsValid -> isValid
The example in the Transformable.hpp (http://www.sfml-dev.org/documentation/2.0/classsf_1_1Transformable.php#details) could maybe also be adapted to follow the camelCase scheme. :)