Using Unity Pro Subscription With Unity 4

I’m aware of the fact that one can use the Unity 5 Pro license on older versions (Unity 2, 3, 4) and still get the pro features. What I don’t know is: do I still get the pro features on older versions of Unity if I choose the subscription payment method ($75 per month)?

A Unity 5 Professional subscription
gives access to the latest version of
Unity 5 Professional, including
Pro-only benefits, within the
subscription period, as well as all
previous versions
. Any new releases
occurring during your subscription
plan are automatically included at no
additional cost.

Short answer, Yes you will.