Looking on the internet deeply has found these results:

inform you of the following is the most popular phrase on the web.

inform you about the following 1655,000 results on the web	inform you of the following 19,630,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	Lastly, I would like to inform you of the following. The Netherlands Government wishes to inform you of the following: Can the Commission inform me of the following: 1. Now, permit to inform you of the following: We inform you following an accident at the Chernobyl plant in the city of Pripyat... Dear Sir, as I see in you a conscientious and honest man, and as I trust you implicitly, please allow me, as time is of the essence, to inform you of the following: Dear colleagues, we want to inform you of the following... Further to your answer of 7 September 2007 relating to el Espartal in Madrid, we would like to inform you of the following facts.

inform you about the following

1655,000 results on the web

inform you of the following

19,630,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

Lastly, I would like to inform you of the following.
The Netherlands Government wishes to inform you of the following:
Can the Commission inform me of the following: 1.
Now, permit to inform you of the following:
We inform you following an accident at the Chernobyl plant in the city of Pripyat...
Dear Sir, as I see in you a conscientious and honest man, and as I trust you implicitly, please allow me, as time is of the essence, to inform you of the following:
Dear colleagues, we want to inform you of the following...
Further to your answer of 7 September 2007 relating to el Espartal in Madrid, we would like to inform you of the following facts.