All STALKERs report to duty! A new S.T.A.L.K.E.R.: Clear Sky patch version 1.5.06 was released today clearing the game from a lot bugs and also adding official DirectX 10.1 compatibility. Saved games from previous 1.5.04 and 1.5.05 Clear Sky versions, will be compatible with the current latest patch 1.5.06. The full release notes follow below.

DOWNLOAD: S.T.A.L.K.E.R.: Clear Sky Patch Version 1.5.06
Game changes:
- Fixed an error when the wounded guide didn't want to lead the player anywhere.
- Increased the number of items for sell for the trader at the goods market.
- Added the possibility to upgrade SVDm 2 at Freedom's mechanic.
- Fixed game crash upon the attempt to speak with the wounded character.
- Fixed an error, which led to the blocking of the storyline quest completion at Yantar (the door to Sakharov's bunker couldn't be opened).
- Increased the amount of money of the bandits' trader.
- Fixed the displacement of the military warehouses on the PDA map.
- Added the possibility to load the last saved game by pressing space bar after the player's death.

Render improvements:
- Added DX10.1 support.
- Added MSAA for alpha-tested objects ("alpha-to-coverage" for DX10.0, custom "alpha-to-coverage" for DX10.1 for better performance, native DX10.1 implementation for better quality).
- Added new quality level for sun-shadows (ultra) for better picture quality.
- Added new min/max shadowmap technique (which takes advantage of DX10.1 when available) allows to speed up high quality sunshafts rendering for top video boards and high resolutions.
- Added high quality sunshafts acceleration for DX9 renderer.

Multiplayer:
- Fixed various game crashes of server and client sections.
- Added the detailed server's statistics.
- Changed the saving of the server online-dump (dump is saved to online_dump.ltx).
- Added the changing of keyboard layout by pressing LCtrl +LShift.

All other changes from earlier patches are also included.

Source: S.T.A.L.K.E.R.: Clear Sky