The '92 catalogue is the first to show Ergo levers, while the Record Delta brake continued until '93. The '94 catalogue is the first to show a dual pivot Record brake.
Here's Greg Lemond with Ergo levers and Delta brakes in the '92 Tour duPont:
http://www.gettyimages.com/detail/81427 ... llustrated
The C-Record-style cranks (for 111mm BB) didn't get updated until 1995.
So there was a gradual, part-by-part change to the newer style, starting with the move to Synchro (downtube) indexing for 6 and 7-speed in 1987, then 7-speed cassette hubs (1990?) followed by 8-speed (1991?) and Ergo (1992).
Some of the dates in that last paragraph are tentative: I don't have the 1989 or 1990 catalogues.
Calmes dans le demi-jour
Que les branches hautes font,
Pénétrons bien notre amour
De ce silence profond.