SteamOS beta speeds up game launches and redesigns achievements

Valve's latest SteamOS beta cuts game launch times, splits achievements into main-game and DLC categories, and adds seasonal achievements that don't affect completion rates. Steam Machines gain e-ink and dot matrix display support, and JSAUX's open-source display app is now available directly in Steam.

• Achievements split into main-game and DLC, with seasonal ones excluded from completion
• Steam Machines support e-ink, dot matrix and color e-ink displays
• JSAUX's open-source display app is now installable directly via Steam
• Silent Hill Townfall performance fixed; Castlevania: Belmont's Curse still has issues