No, not an income tax. Just the word is inflammatory. There are plenty of other options, once lawmakers get serious about looking for them.
Think "Cut Spending"
Think "Vouchers"
Think "Get the Government OUT of the Education business"
(Ever notice every Tax, everything that separates You from your Money, is "For the Children")
We already have a state corporate income tax. The state likes to call it a franchise tax, but it is a tax based on income and applies to both corporations and limited liability companies. Perry's latest proposal simply expands the corporate income tax to cover partnerships (along with increasing sales and other taxes).
Again, it all boils down to the simple question of which of my pockets is the state going to pick? Lowering my property taxes doesn't make a hellofalot of difference if they are simply going to take the same (or more) money from me and call it some other type of tax.