When banks implement blockchains, will their version allow tracking of all the individuals involved in the whole chain?
Of course it will. They want to use a blockchain for maintaining an efficient high-speed ledger of all bank-to-bank transactions. When you do a funds transfer from, for your account to an account at another bank, they'll write an entry to the block chain and both parties will be able to validate the time at which the transaction occurred. Having an unforgeable ledger is the entire point of the system that they're proposing.