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A completely new syntax for defining classes is now present, together with a converter to adopt the new syntax in existing programs. Continuations and generators have been moved in the main image. The image is loaded faster and uses copy-on-write memory mapped files, thus improving memory consumption when multiple instances of GNU Smalltalk are loaded. A new format is supported for packages written in GNU Smalltalk. There is a new database interface with support for MySQL, PostgreSQL, and SQLite, as well as several other new packages.