# What’s New in *GetFEM* 4.2¶

The New brick system is now mature and several coupling bricks has been developed.

Released version, 2012/08/02.

The main changes are:

- The license of
GetFEMhas moved to LGPL 3 with GCC Runtime Exception allowing commercial codes to use Getfem.- Contact/friction bricks has been extended to non-matching meshes and to integral contact condition with different augmentations (Alart Curnier, De Saxce projection, augmented multipliers) (work of Konstantinos Poulios and Yves Renard). A large sliding contact brick is in progress.
- A complete tool to perform continuation of the solution to a model with respect to one of its parameter and to detect bifurcation has been developed by Tomas Ligursky.
- Some additional model bricks : pointwise constraint brick (to prescribe a constraint on a point eventually inside an element), basic nonlinear brick (for instance, for semi-linear equations).
- It is now possible to solve a model with respect to a subset of variables.
- The experimental mesher of Getfem is now (partially) interfaced with python/scilab/matlab.
- Some tools to verify the consistency (tangent term) of a brick or the whole model has been added.
- Many bug fixes.