Wildcard Filtering in REST v2

Continuing the discussion from Filter Contacts and Companies:
Where can I find documentation on filtering with wildcards? Something like firstname==Jon*
or
email==*@domain.com

REST API v2

(bump) I am wondering the same. Does anyone have current intel on wildcards in v2 Contacts? I would love to know if there are wildcards in place or planned for the v2 contacts endpoint. Or perhaps there are strategies I can employ to convert a single text field into multiple searches to get wider results.

No official response points that it may not happen.

The New REST v2 Endpoints should have been released by now, but nothing official has been mentioned. No idea if the querying / filters will be updated as part of the update.

We do need XML-RPC querying capabilities in REST, otherwise it is going to be a pain for developers to migrate across.