Changes being made involving feeds and speeds?

Notice feeds and speeds changes recently? Is there an update on going and if so where would it be posted?

In general, factors affecting the calculation of cutting speed include the material being machined (steel , brass, tool steel, plastic , wood) , the material the cutter is made from (carbon steel, high-speed steel, carbide, ceramics) , the economical life of the cutter, that is the cost to regirnd.