Evolution of Combat Beta – Live!

I kinda hope slayer exp increases a little bit, but not too much at the same time ...

I agree with this, but they said they tweak slayer rates so that no matter how fast you can kill monsters it will be around the same rate.
However in the beta everything is multi-combat, which means pretty much every task is cannonable (unless they make cannons not allowed in a lot more areas) which will significantly speed up slayer but means it will cost a bunch more too.

That is interesting Portus, glad Jagex is doing that.

The cost is negated by the time you save.