Again, after around three months of development, the next version v0.0.4 of matlab2tikz has been released.
The script has mainly evolved around its user interface and includes many bug fixes and improvements. Support for error bars has been added, custom file encoding is now possible, and quiver plots are handled in a better way.
It is now possible to evoke the script with options, for example
'width'to determine the dimensions of the resulting plot.
For more info and downloads, see the matlab2tikz page.