A very useful guide to implementing SEO in Magento 2 by Amasty (one of the leading Magento module providers).
Many improvements have been made to the management of SEO in Magento 2. The article covers many of the Magento 2 SEO settings which are available there out of the box, so that you will be well equipped for switching to Magento 2.
See also this article for further information on SEO in Magento.
