tinydns/dnscache after may 5th

Anyone concerned about the DNSSEC switchover on the 5th, related to how it
will affect tinydns/dnscache deployments? I have read some somewhat
conflicting articles outlining what the root switchover actually means and
am honestly confused :/

I understand that djbdns does not support EDNS0. Its my understanding that
dnscache will only ever ask for replies via UDP and smaller than 512bytes.
What should we be expecting is the actual impact of the May 5th switchover
with regards to tinydns/dnscache?

Any clarification would be greatly appreciated. Thanks.

-- Jeff