What about you和how about you有什么意思上的差别?

What about you和how about you有什么意思上的差别?

i am going home, what about u?

我要回家了,你呢?

i am going home, how about u?

我要回家了,你打算怎么样?

what about you跟how about you.是interchangeable的。。反正看上下文吧,其实区别不大换着用都一样