It's just the same office.
Trump took his first flight on AF1 BEFORE Obama took his last flight.
Trump made a deal for a new AF1 so why would they spend money re-modeling.
AF1 has been in service constantly with no chance to change anything.
The jacket on the chair is an "Air Force One" jacket which is always on the plane and draped the same in much newer photos than the one you reference (2105.)
The blinds are automatic and largely fold in the same way every time.
The things on the desk are permanent and secured because it's a plane, so you know, turbulence.
The rack behind the chair is visible in photos of the office on AF1 with trump in it not a year ago.
With 10 min. of research you could have found out that this is how the office on AF1 looks all the time.
It's a USAF aircraft and the crew cleans and resets everything (which is all in a specific place and secured for safety.)
The photos are similar because one is a blurry reflection and the other is a real photo of the same office, which looks like this all the time.