Hey Eugene,
Sorry for the confusion. Unfortunately at the end of my email the FAQ was not updated, and contained the sentence “Any newly released functionality that’s added to the new plans, will not be available in the old plans.” This isn’t true actually, all the old customers of Professional and Business plans will get any “new features” we will be releasing during the year - we don’t want to have customers and old plans with very old functionality 
we want to make sure all our customers use the up-to-date platform and it’s the same platform for everyone.
Hope this helps clarify it.
Mariam