On other threads the topic of weather or not EP should have an advancing timeline, or full on metaplot, has been debated as a side topic.
There are advantages and disadvantages to having the setting have an advancing timeline. I will let others sketch those out as they see fit.
I have another solution.
Instead of having a rigid timeline have a more flexible continuum of events. For one both the past and future are mutable in this setting. There is no direct translation from years PF to years AD (quite a feat given how many clocks and automated calendars Transhumanity has lying around); though we know it is probably around 2150 AD give or take a few decades.
The idea is to have a general order of events that will happen or are very likely to happen and historic timeline written out with each new edition of the setting extending the history by a number of years and adding to the timeline.
One could even do a version of the setting back in time such as at 5 PF or even during the fall itself. Though the latter would be better suited for an optional campaign guide.