With the lifting of the AWB there are going to be 4 magazine types made specifically for the 6.5 Grendel. Currently there are 10rnd and 17-18rnd available. The 25rnd LEO ones can possibly be used and will be produced without LEO stamp in the near future.
There is also a 22rnd magazine that will be produced - this one has my interest. It protrudes to the same length as the pistol grip on the AR rifles.