Yes, it's possibly BRT (though as far as I recall, it was, like in Ottawa and Mississauga, envisioned as Transitway that could be later upgraded to LRT).
I've assumed it wasn't BRT and it was Ontario Line technology because of where it was positioned in the list of 33 proposed projects. Projects 1 through 20 all appear to be likely BRT, while 21 to 28 are all likely streetcar/LRT. 31 is subway and 32/33 are GO Train/Heavy Rail.
WIth the Ontario Line at 30, then this east-west line along the 407 at 29 would either be assumed by MTO to be LRT or Ontario Line technology. At least for the purposes of this document. Sometimes I think we'll be lucky if all the committed projects get built!
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Before anyone takes this too seriously for, note that on the highways side, it includes New 7 from Kitchener to Guelph - which was expected to be built in the 1960s or 1970s; it will be 100 years late at this rate!