He is busy as usual.
The weather is the same as ever, isn't it?
He's as energetic as ever.
You're as busy as ever, I see.
She's still coming in late, as always.
相変わらず describes a state continuing 'as usual' without judgment, while 未だに often implies the speaker thinks the situation should have changed by now.
相変わらず emphasizes that a situation is unchanged over time, while やっぱり in this sense simply notes that things are still the same as before.