Olympus has made many fine products however their future is at best uncertain. I would say that the prudent thing would be to wait for a bit of evidence (in the form of new product introductions) from the new owners before committing . Their 20MP sensor while a good one is a couple of generations old, now is the wrong time to buy it.
If you see a new sensor, then that would be a good first step.
The first thing I would recommend is renting a Nikon Z50 ---see how it works for you.You already have the lenses.
If you see a new sensor from Olympus, then rent one of those.
Renting is a great way to be sure. I am rooting for Olympus but the truth is their camera division has lost Lots of money annually for a long time, the new owners cannot let that continue. Lots of stuff has to be cut , wait for a new sensor or buy something else.

Hi All:

Considering Olympus system primarily for weight reduction. I have been a Nikon user for 50 plus years and have used both FF and DX versions of their cameras. Presently have a D850 and D500 with many many lenses and love these cameras. Due to hand issues, I am entertaining going mirrorless but don't want to go mirrorless and have almost the same weight with full frame mirrorless cameras, adapter pieces, etc. Therefore, my reasoning to go to Olympus. I would love to hear what members have to say coming from Nikon or Canon FF DSLR's to the Olympus system. I'm concerned I won't be happy with the smaller sensor and certainly smaller MP. I am aware there is no facial recognition or bird eye for the Mark111 but am hoping Olympus will come out with something in the near future. I am thinking the E-M1X will be heavy so I would appreciate some feedback on this issue as well. I will keep my D500 and 500mmPF for my wildlife activities for the time being.
TIA for any help you can offer and I look forward to hearing what you have to say.

The company that bought the photographic division from Olympus, called Japan Industrial Partners (JIP) has recently announced its commitment to keep the lens road previously set by Olympus and from what I know they are going to introduce new models in 2021. If you do not know it, the R&D plus the whole personnel previously working for Olympus now works for JIP. I cannot predict the future but the new company has retained all Olympus Visionaries and service centers around the world.

I have been using Olympus cameras with Olympus and Panasonic lenses for several years. My cameras are old, they do not have phase detection built-in except for OMD EM-1 so I do not know how good are they for wildlife photography but I do know the new cameras with built-in phase detection are excellent for that purpose in case wildlife photography is of interest to you.

I have never used a Nikon D850 or a D500, the Nikon bodies I use are old. The Olympus bodies except for the OM-1X are small, considerably lighter than a dSLR with a smaller and very capable sensor. The lenses are also small and sharp. Many professionals are using Olympus cameras and lenses.
The new company has indicated that the use of the micro fourth third format will be kept. It all seems to indicate the new company is working on a new sensor. I do not have all the information so if interested in a new sensor you will have to wait.

Traveling with these small cameras or spending a day photographing with them is a breeze compared to the big and heavy dSLR bodies. Olympus has always had excellent optics and those made for the small cameras are also of excellent quality. I find myself using the Olympus bodies more than my Nikon bodies and for sure when I travel I pick first one of my Olympus bodies. Low light performance with my old cameras is not spectacular but we are talking here old technology. Even so when I have to go with a high ISO my tendency is to expose to the right (ETTR) and I get very good results or even better if I use during editing my denoise software. I am not precisely a low light shooter.

Like you I have been using Nikon cameras and lenses for over 50 years and I feel very comfortable using Olympus. I do not go super big with my enlargements although I know the files enlarge very well. The cameras Olympus makes with high resolution shots I heard are fantastic especially for the portrait and landscape photographer. The new company announced new technologies and from what one of the CEOs said they intend to work with other companies developing new cameras and lenses.

As I said, I cannot predict the future but it looks fine for Olympus. Their new and very expensive lens for wildlife photography is in back order. That tells me enough about the future of the company.

Hi All:

Considering Olympus system primarily for weight reduction. I have been a Nikon user for 50 plus years and have used both FF and DX versions of their cameras. Presently have a D850 and D500 with many many lenses and love these cameras. Due to hand issues, I am entertaining going mirrorless but don't want to go mirrorless and have almost the same weight with full frame mirrorless cameras, adapter pieces, etc. Therefore, my reasoning to go to Olympus. I would love to hear what members have to say coming from Nikon or Canon FF DSLR's to the Olympus system. I'm concerned I won't be happy with the smaller sensor and certainly smaller MP. I am aware there is no facial recognition or bird eye for the Mark111 but am hoping Olympus will come out with something in the near future. I am thinking the E-M1X will be heavy so I would appreciate some feedback on this issue as well. I will keep my D500 and 500mmPF for my wildlife activities for the time being.
TIA for any help you can offer and I look forward to hearing what you have to say.