Potentially enormous news. We'll see what comes out about this in the next few days.
EDIT: Or it could be a PR stunt until the heat is off.
He still owns the club so I’m not sure how much difference it really makes.
I want to preface this by saying I am in no means defending Abramovichs continued ownership of the club whilst his association with Putin exists.
From what I've read, he has approximately 2 billion euros in a sanction insurance policy, so he personally will be fine. The club is also a bug enough brand that it will attract a decent owner in thay situation, as well.
That said, who knows what really happens long term here. He hasn't been able to attend an actual game at Stamford Bridge in like 3 years now, so not being able to see the team isn't as big a concern. He's been to every international game he can make it to, but even that selection will get smaller as this unfolds.