Yes, there was a running change for the MX-890.
I do not know the exact date this happened but it was just a few years ago I believe. Most of the remote you find on eBay are all still the old style.

In addition to the font/symbol changes on the remote, the bigger change was the back lighting of the buttons. They supposedly made the backlight brighter for the buttons - which they desperately needed. The old backlighting was pathetic, WAY to dim. But I have not had one of the newer MX-890 in my hand to see this for myself.