Cable, a character who already had one of the most convoluted histories in comics, is now a teenager/young adult. The reasons for which are now old enough that I feel I can tweet without spoiling everyone& #39;s pull lists.
This means that Cable was born in the mid-00s (Marvel sliding timescale, was actually the late 80s), then transported to the far future. He grew up there into a young adult, then travelled back in time to save Cyclops& #39; life in the late 2010s. And kill himself, of course.
There, he continued to live for an as-yet unknown amount of time. He then returned to his home of the far future and aged to his mid/late 30s before going back to just after his birth (90s) & palling around with the New Mutants/X-Force.
After several years, palling with the X-Men and Deadpool (and multiple "deaths"), he returned to the far future to, I dunno, fight Apocalypse again maybe? But then he returned to the present to join the Avengers. And get killed by his younger self for failing the timestream.