The latest available AMD Catalyst Windows and Linux drivers can be found here:
AMD Catalyst Windows: http://support.amd.com/en-us/kb-articles/Pages/latest-catalyst-windows-beta.aspx
AMD Catalyst Linux: http://support.amd.com/en-us/kb-articles/Pages/latest-linux-beta-driver.aspx

Highlights of AMD Catalyst™ 14.4 Windows Driver

  • Support for the AMD Radeon R9 295X

CrossFire fixes enhancements:

  • Crysis 3 – frame pacing improvements
  • Far Cry 3 – 3 and 4 GPU performance improvements at high quality settings, high resolution settings
  • Anno 2070 – Improved CrossFire scaling up to 34%
  • Titanfall – Resolved in game flickering with CrossFire enabled
  • Metro Last Light – Improved Crossfire scaling up to 10%
  • Eyefinity 3×1 (with three 4K panels) no longer cuts off portions of the application
  • Stuttering has been improved in certain applications when selecting mid-Eyefinity resolutions with V-sync Enabled

Full support for OpenGL 4.4
Mantle beta driver improvements:

  • BattleField 4: Performance slowdown is no longer seen when performing a task switch/Alt-tab
  • BattleField 4: Fuzzy images when playing in rotated SLS resolution with an A10 Kaveri system


Highlights of AMD Catalyst™ 14.1 Linux Driver

  • Support for the AMD Radeon R9 295X
  • Ubuntu 12.04.4 support
  • Full support for OpenGL 4.4

Resolved Issue highlights:

  • Corruption and system hang observed while running Sanctuary BM with Tear Free Desktop enabled
  • Memory leak about hardware context EGL create context error for glesx
  • GPU hand in CrossFire Mode [Piglit]
  • Test "spec/arb_vertex_array_object" failed [Piglit]
  • Test "glx/GLX_EXT_import_context/free context" failed [Piglit]
  • Test "spec/ARB_seamless_cube_map" failed Piglit]
  • Test "texture swizzle with border color" failed
  • Glxtest failures observed in log file Blank screen observed while running steam games with Big picture
  • 4ms delay observed in the glxSwapBuffers when vsync is enabled
  • RBDoom3BFG the game auto quit when use the security camera terminal
  • ETQW segmentation fault