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One wrote:

You might guess what this all is about from the headline if you are up to date

I changed it into:

You might have already guessed what this is all about from the post's title if you are up to date with news.

First, I like to know is it "what this is all about" or "what this all is about"? Can one say "what these are all about" when speaking of a post in a forum?

Second, which is idiomatic

  • if you are up to date
  • if you are up to date with news
  • if you are up with news
  • if you keep up on/with news

1 Answer 1

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If you are referring to multiple items

A flurry of tweets today and what this all is about is the Trump cabinet. (present)
A flurry of tweets yesterday and what these all were about was the Trump cabinet. (past)

If you are referring to a single item (a post)

What the post is all about is the selection of his cabinet.

The patterns you are using are

"All is about" talks about several things regarding one thing.

Lots of activity tweeting and what this all is about is the cabinet selection.
what the various tweets are about is the cabinet selection

or

"Is all about..." talks about a single thing talking about one thing in depth

His tweet is all about the cabinet selection.
his tweet describes the cabinet selection in detail and nothing else

To stay current with the news

if you are up to date
if you are up to date with the news
if you are up with the news
if you are up on the news
if you keep up with the news

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