Will Magento 2.0 be patched to support Elastic Search?

No. Magento 2.0 will not be patched. However, Elastic Search will be added as a Magento Enterprise Edition feature in 2.1 and will be enhanced in releases beyond 2.1.

New Magento Enterprise Edition 2.1 features will include:
New Elasticsearch - A shift to the leading open source search technology, Elasticsearch, gives merchants the ability to easily handle large catalogs and scale up search functionality as traffic increases, is easy to configure and delivers high quality results.