Timeline was adding a year every year. OK, not clear.
The 3e RL developpers added a Barovian year with every real time year passing by, so the plots evolved naturally, not too quick, not too fast. (possibly it was also the case in 2e, I do not remember)
And year 755 was officially set with the release of the RL3e book, in 2001.
(Year 2022 means Barovian calendar 776, but it doesn't mean much as the developpment of Ravenloft stalled with the arrival of 4e, then 5e went completely another way.)
Last published book in the 3e era was in 2005, meaning the 3e setting evolved canon-wise until year 759 Barovian calendar.
FYI, the FoS Reports, that came after the end of the 3e era, sort of Gazetteers for the places without official 3e Gazetteers, started in 759, and are slowly evolving (but not at the rate of one / one year, more like one every tenth

(Souragne, Zherisia and the Nocturnal Sea were set in 760, I guess the Sea Of Sorrows should be follwing soon after in this calendar)
Sadly, if I'm not mistaken, drivethrurpg makes available old stuff of the 2e and 3e era, but not the 3e official five books of the Gazetteers...
"A full set of (game) rules is so massively complicated that the only time they were all bound together in a single volume, they underwent gravitational collapse and became a black hole" (Adams)