My talk at PGEast on Foreign Data Wrappers had a good audience, and there was good discussion. The slides are here: fdw2.pdf. I'm glad to see that there is lots of interest in these. It's a very important new feature.
The new FDW I announced is one to read fixed length record files. This FDW doesn't use any of the COPY code, which makes it a good base for anyone who want to develop another FDW to use.