The annotation packages concerning custom Affymetrix probeset definitions based on GeneAnnot have been updated from version 2.0.0 to version 2.0.1 The updated packages are listed below: gahgu133plus2.db gahgu133a.db gahgu133b.db gahgu95av2.db gahgu95b.db gahgu95c.db gahgu95d.db gahgu95e.db Additional information for GeneAnnot custom CDFs users are available in the project website: http://www.xlab.unimo.it/GA_CDF/