For my domain (NULLROUTE.EU), I changed all nameservers two months ago, and added DNSSEC (DS) records one month ago. Both show up correctly in WHOIS and in the "EURid Extranet" website.
However, the changes *still* do not show up in DNS, even if I query the .eu nameservers directly ("dig nullroute.eu. ANY @y.dns.eu.").
I contacted EURid and they told me it is a problem with my registrar, so...