Simplify the following text for a Grade 14 native English-speaking person.
Original: TIFF has not had a major update since 1992 , though several Aldus\/Adobe technical notes have been published with minor extensions to the format , and several specifications , including TIFF\/EP ( ISO 12234-2 ) , TIFF\/IT ( ISO 12639 ) , TIFF-F ( RFC 2306 ) and TIFF-FX ( RFC 3949 ) have been based on the TIFF 6.0 specification .
Simplified: TIFF has not had a major update since 1992 , though several Aldus\/Adobe technical notes have been published with minor extensions to the format , and several specifications , including TIFF\/EP , have been based on the TIFF 6.0 specification .