As reported in my earlier post, Canon is expected to announce the EF 85mm f/1.4L IS lens plus three more EF 'high end' lenses, probably EF-S and EF-M models in the month of August. Keep checking back for more info as I get them.
I know of no other 'L' lens to expect anytime soon. The EF 600mm f/4 DO BR lens is expected next year as reported earlier and the EF 70-200mm f/2.8L IS III is also expected to arrive some time in 2018 but not next month. Keep checking back for the latest information as I receive them.
I will be leaving for my annual Alaskan Wildlife Photo Tour and will try and stay in touch if time permits. In the meantime, you can follow my travels on Facebook and Twitter. See my equipment bag and works on MichaelDanielHo.com