Yes, but I do spend a lot with them. Last issue was 2015 (quite early in 2015 I suspect). There's been a small supplementary catalogue of new things issued more recently this year.
Pure guess, but at this point I doubt they'd want to do a new print run of last year's catalogue, which probably means they would only have limited stock for new larger customers.
I spoke with the team which produced the RS catalogue some years ago, and it is an enormous undertaking. They used the largest Sun computer available at the time to assemble it (that was probably an E15K or E25K - I can't recall exactly when it was), so I don't underestimate the effort involved in generating a new issue.