as of

From

In both?

Yes

Thank you for your reply.

I don't think 'from' is very close in meaning to 'as of'.

The words mean that whatever else is mentioned in the sentence may have been true at the 'as of' time, but are not necessarily true now., in my opinion.

5jj, wouldn't you say that in BrE, 'as of' means exactly the same as 'as from', so that both expressions essentially amount to 'from'?

No, as I said.

This citation from COCa illustrates my point: As of April 2010, 41.6 percent of the U.S. population had a Facebook account. The figure of 41.6% was accurate for that month. We often use 'as of' when we state a situation that is true at the moment of speaking/writing or true at the time or reference we are using. we implicitly admit that

Ok ,let's leave it there.

OK "fivejedjon", you opened the issue in more deeply manner but now I can't find an substitute for the "as of" in the mentioned sentences. For example if you want to replace the "as of" in below sentences, you replace them by what word(s)?

As of the time it went to press. (a book)
As of July 2011, there were...

I would not wan to replace the words 'as of' in your examples.