Existing lattice models have no structure to handle time, they all expect the state to last forever. It has to be applied manually, and can't be done automatically since the security monitor for lattice structured systems cannot interpret it. I grant that a DTE rule set may be more complex to define a lattice, but the intent appears to be to provide initial definitions, and explore more flexible definitions. Right now, I don't fully understand the difference in implementation, other than the security monitor itself. It appears that the DTE can define how the bits are interpreted.
Lattice models tend to have a fixed definition of the bits, limiting redefinition.
I don't yet know if there is still a limit on the number of bits, but perhaps that is more flexible too. It certainly should be less restrictive on the algorithm implemented for evaluation.