gimmeheadroom
Headphoneus Supremus
Thanks @frogmeat69 @gimmeheadroom @betula for the explanations & motivating comments.
Makes sense that RME's official site list the most recent products. However in stores, old items might be available with risk of some mislabeling.
In a store near me (bax-shop), "RME ADI-2 Pro FS R AD/DA converter" for £1,579.00
And same store has "RME ADI-2 Pro FS 2-Channel AD/DA Converter" for £1,119.00
Is the difference only in "R" for remote? Do you believe both have FS and AK4493 described by @betula
The Pro model has more features and is not the DAC we're discussing in this thread. RME is a pro audio company and the ADI-2 DAC FS is pretty much the only "consumer" product. That means it is targeted at the hifi buyer rather than studio/production/live performance user. You may or may not want the extra features. Also, the amp is a little more powerful. Personally I prefer to go for a separate amp rather than jam an amp for all seasons in a DAC housing.
Fortunately it is easy not to get ripped off if a shop doesn't distinguish between the previous and current models of the ADI-2 DAC, either intentionally or by mistake.
The remote on the current version looks like this:

The RME page is still linking to info and setup videos using the previous version
The reason is that except for the change from AKM4490 to 4493, the upgraded remote and one additional color option on the OLED display, the units are almost the same.
For comparison of prices at a reasonable shop, consider Thomann.de
Current production RME DAC ADI-2 FS https://www.thomann.de/intl/rme_adi_2_dac_fs.htm
Current production RME ADI-2 FS (notice subtle name difference, totally different product!) https://www.thomann.de/intl/rme_adi_2_fs.htm
If you check upthread, you can see pics posted by guys with the new and old units including boxes and remotes etc. I got a new model from the first batch Thomann received and posted pics.