Iota flash is there.
It is a protocol to bind multiple nano transaction into one transaction.
Why it is so great?
Some people where wondering hoWie little chips in should be able to make the proof of work for nano transactions efficiently and therefore where fearing for mining pools which are payed for calculating them which would be bad for security (because they might get to mighty.
Flash is a great solution to that and makes them even faster.
You can read more about iota flash here:
https://www.cryptocoinsnews.com/iota-unveils-flash-network-allowing-for-true-nanopayments/