Dep : All the signature-related features are DEPRECATED and will be removed in december 2009. This includes the 'sig' option to wizard(), the getsig() and gensig() functions, and the SIG_* constants. Afaik those features were never used in real life, and they make the XS code slow and brittle. If you want your wizards to be globally available, you'll have to handle that yourself by storing them in a hash.
Doc : More examples in a new COOKBOOK section.
Fix : Compatiblity with the 5.11.0 release. The new compatibility constant VMG_COMPAT_ARRAY_PUSH_NOLEN_VOID was added to cover this.