There is a new revision for the fuel filter with a 6.6 bar pressure regulator versus the older 6.4 bar regulator. Since I was due for one, I purchased one from TheVWPartsStore.com for about 35 shipped. The filter looks no different from the older version except for the 6.6 bar marking. The part number is 1K0 201 051 K.
The factory interval is around 40,000 miles I believe. The one I changed out had about 20,000 miles on it. When I first changed out my fuel filter, I noticed that a lot of the gas that spilled out was a muddy brown color. This time there was none of that.
Here’s a link to the fuel filter DIY. Excellent instructions. As always, when working with fuel, be careful. Work in an area with good airflow and no sources of ignition.