AMD has pushed out 2010's first batch of Catalyst drivers, complete with the usual round of performance improvements and bug fixes.
Catalyst 10.1 brings a 3% speed increase to Left 4 Dead 2 and Crysis on Radeon HD 5700-series cards, and a 4% to Crysis on the 5800-line.
Bug fixes span from Windows XP to Windows 7, and you can read the release notes here.