I know this is not the first time this has been requested and your answer was not to inlcude IS-IS in the near future. Now this other request for IS-IS is more than a year old (in other words “near future” by then has passed since long time ago). So my question, still no plans for IS-IS in Router OS? I would really like to integrate one of these boxes into our MPLS backbone.
As far as I know IS-IS not planned at the moment. We are working on improvements for existing routing protocols, so there is no human resources to add another one.
Better to improve the existing protocols.
Like add MPLS fast reroute 
What a pitty, so I need to find another way to connect the tunnels to the MPLS backbone. Thanks for the answer.