CI 4.0 Micro-framework?

So a few days ago Lumen was released.  It's a micro-framework of Laravel.

I think it's a pretty good strategy.  If you need something simple, start with Lumen and if your application goes to need a full stack, then it can be upgraded without too much problem.

It's also blazing fast framework, sorry to say leaves CI in the dust and actually is far better than CI 3.0.

Now my question is, will CI be following this same strategy?

As for me, well CI 4.0 is 2 years away.  I can't wait.  I'm taking a serious look at Lumen now and thinking about porting my code over from CI 2.X to it.