We do have longer-term plans to support ORCID, but likely based on the OJS 3.0 platform, which is currently a work in progress. If you're interested in supporting it earlier, then a plugin is probably the best way; the Google Analytics plugin, for example, adds an additional form field to author the information to allow authors to provide their own Google Analytics ID.
The other complication with ORCID is -- as I understand it -- a paid membership is required in order for a journal to submit data about publications to the ORCID knowledge base. This is a little backwards to me; ORCID needs to compete e.g. with Google Scholar, and to expect journals to pay in order to provide data to ORCID will make it untenable for many of our users. Of course, requesting ORCID IDs during the submission process doesn't affect this aspect of ORCID interoperability but it does play into our long-term appetite for ORCID support. Google Scholar, by contrast, harvests submission metadata directly from OJS via meta tags embedded into the article view pages.
Public Knowledge Project Team