Vital Source Technologies funded the addition of LTI 2 support to Moodle 2.8. It is now proposing to do the same to add support for the new Content-Item message type (see http://www.imsglobal.org/lti/ for details) which improves the workflow for adding links to external tools.
A project page describing the work to be undertaken is being set up at https://docs.moodle.org/dev/LTI_Content_Item.