In the new expansion, bleeds will only , explicitly receive + damage from Tiger's Fury and from Bloodtalons for the durations. Damage trinkets will not retain the plus damage for the duration when they expire.
example: bleed starts with plus agi trinkets for 10 seconds. agi trinket lasts for 5 secs. first 5 second bleed will ticket 10k damage, rest 5 seconds will tick 6k.
this does not affect feral skills and talents. those will snapshot.