Thankyou @zorink for explaination of Z16 r4 revision and reason for it. I respect that you wished to wait until all mirrors were updated with r4 before your notification, but pleased that you have now made that notification.
You will see from the posts on the forum that comminication of such OS changes are considered important to the community in order to avoid speculation and confusion. I hope you will continue to do that.
Oops, I just made r3 installer 
I will wait for making an r4 installer for a few days to make sure that there will be no r5 on the horizon 
I have got the full set of downloaded Z16 Core .iso's and their SHA256's .....and counting.
Just waiting for r4 and its SHA256 from zorin.com source.
I must point out that getting in and fixing something or improving the .iso is pretty normal.
I cannot imagine a distro that doesn't do that.
This is also what newer versions of many packages are all about- patching this, fixing that, adding a new whatever...
Making changes is fine and good. It is the lack of information and changelog that I find irritating.
With a bit of furor over Zorin OS 16 Core... With the pressure for Zorin OS 16 Lite... Some Forum changes and everything else... I think it is possible that the ZorinGroup are feeling a hot plate beneath their feet.
It's a fine line between appreciation for what they do, in combination of irritation at what they don't do, I think.
You are standing in a long line of people and I, for one, am right next to you.
It is not that it is irritating, as much to some of us - as much is it highlights questions of Trust.
Why not Pro ? xD
Looking back. If I had released a new software version to clients without updating and sharing a formal changelog, I would have soon been out of the job.
It is a Pro version I am talking about.
I downloaded it from the link given in email from Zorins.
Since there is no name change for the Pro version for incremental releases, I have to use SHA256 to confirm its version.
Oh sorry, I misunderstand you than, because you wrote r3.
I know that pro doesnt have any additional letters xD
So, anything new, better ? xD
I think it only affects the new installation and make no difference to the pre-existing users.
Thanks,
Maybe I will switch to Zorin today 
Got bored, and want to give them another chance. At least, brothers Zorin are active here xD That is what I want to see, their communication with the community. I think that is important also ( not just a quality of Zorin as a system)
You will test Pro r4?
Great!
Yeah, I hope it is uploaded Downloading atm , will see.
Btw, forum informed me that I can send you personal message, because I replied you 3 times ( cool thing xD)
I suspect a lot of people on this forum fit that criteria.
Those drive me nuts. Another is, "You have posted 30% of the replies here. Why not give others a chance to speak?"
The forum frequently tells me to Shut Up.
OMG I know, I hate those messages! And furthermore, there is also the, THIS POST HAS BEEN SOLVED. Yeah, thats just great, take up the whole space so I can't get a preview of how my message is going. Click the X.
Supposedly all those blue screen messages, are there to keep the forum running smoothly. I call BS on that, they are an annoyance that get in the way. You know who does keep the forum running smoothly? The Mods!
Truer words have never been spoken.
Hello. @zorink Can we have some topic here what will be in future about update Zorin 16 Pro or modification - i mean about next year or something?
I wouldn't bother ZorinK at this time, the Zorin brother's have been hailed a bunch of times already regarding updates and they have already said their piece on the matter. As far as knowing what will be coming, doesn't the Zorin site say somewhere what is planned in the works? If not on their home page, then maybe their blog pages IDK, I thought I remember seeing that.