A note on terminology: some news outlets will report that Clinton will "suspend" her campaign; others may report that she will "concede" to Obama; other will report that she is "dropping out."
It's ok to use "dropping out."
She doesn't officially lose her delegates until they vote for someone else at the convention, so she could always jump back in. There's no paper you sign that magically waives away your delegates, and there will be plenty of them, I'd bet, who, if you ask them next week, insist they'll vote for Hillary.
But there's no need to parse ... aides and advisers say that she's conceding the race and endorsing Obama.
After Friday, virtually all of the staff will be gone. Not furloughed, but gone. Clinton will have conceded the race by Saturday, will have endorsed Obama, and will stop campaigning. For her, the race is over.
If Clinton does for some reason use the word "suspend," instead of some more final word, it will be a rhetoric feint, one that is sure to further anger the Obama campaign.