Any plans to implement "rotate"?

As you can check on the status page [1], 'animate' and 'animateTransform' are well supported, so there should be no issues with 'rotate' itself. You are likely hitting some other limitation (such as additive animations or event triggers) or possibly a bug.

Can you double check existing issues and confirm? If not one of the existing issues, can you elaborate on your "rotate needs", attaching an example where Fakesmile doesn't work as expected?

[1] http://leunen.me/fakesmile/status.html

Hi Марко,

I think you're referring to the rotate attribute of the animateMotion element. Right ?
The problem is that I don't see how to implement that simply (i.e without reimplementing a Bezier algorithm).

For the path positions, I use getPointAtLength() which returns the coordinates for a given distance, "utilizing the user agent's distance-along-a-path algorithm". But I don't see any API function to get the direction of the curve at a given point.

So, I'm tempted to answer : no, it's not planned unfortunately. :-(
If anyone foresee a solution, it is welcome.

As a workaround, I suggest to use a separate rotation animation in addition to the path animation. But it might be complicate to sync :-(

But what you can do now is vote for SVG animation in the Internet Explorer Platform Suggestion Box :
https://wpdev.uservoice.com/forums/257854-internet-explorer-platform/suggestions/6509024-svg-animation-elements