gcc 4.0.x with Dev-C++ ide... safe?

Is there any specific, technical reason Dev-C++ includes mingw-gcc 3.4.2, or is it safe to overwrite gcc 3.4.2 with gcc 4.0.2?

Any compiler flags 4.0.2 has deprecated that Dev-C++ assumes exists, etc?

>>10
The last release was 2.0.1, a development release, almost a year ago.

So long to update a develop branch? This isn't stable.