The revised historical warming rate does not necessarily contribute to a change in timing of estimated impacts. It depends on how impacts are calculated relative to climate. Because the revised historical warming results in a redefinition of the 1.5℃ GWL relative to the modern time period  rather than a different level of overall change , impacts assessed relative to the modern time period are unaffected. There are, in effect 'old' and 'new' definitions of the 1.5℃ GWL with different levels of impacts, and the impacts assessed for the 'old' 1.5℃ GWL now apply to a different level of global warming. However, the timing of impacts assessed relative to pre-industrial , are affected and we are closer to impact levels associated with 1.5℃ and 2ºC.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report