I'm really glad that his F4 from MKX is back (it's going to be a recurring advancing move, specially since B12 doesn't seem to be back), but I'm starting to think he doesn't have an OH to mix all those lows.
s1, b1, f1, s2, b2, f2 and s3 are the 7 string starters in Injustice, not all characters have all 7 asigned and so far we know of 6 starters (what used to be his s1 and its follow ups, b33, f33, f42throw, cryo's f122 launcher and the new kicks string).
The new kicks string reminded me of one of Kenshi's strings so maybe it will include an OH launcher later in the string but if that's the only OH you can only mix it with slide (so it will be really unsafe) and always from the same string starter. Hopefully he will get the 7th string starter and it will be an OH, he has tooooooo many lows to not be able to mix them with something.