Does he mean AFTER the 2010 BRM riders have taken their places ?
I'd guess so. I'm guessing it'd be a lottery amongst the group of riders that would cause the quota to be exceeded with the order of preference of groups as:-
Riders of a 1000km BRM in 2010 who pre-register
Riders of a 600km BRM in 2010 who pre-register
Riders of a 400km BRM in 2010 who pre-register
Riders of a 300km BRM in 2010 who pre-register
Riders of a 200km BRM in 2010 who pre-register
Everyone else
So if there are enough places for everyone who has done a BRM ride in 2010 (and pre-registers within the time limits) then it'll be a lottery for everyone who thinks about doing it in 2011.
if there are only enough places for everyone who has done a BRM 300 or longer, but the quota is filled by pre-registrants having done a BRM 200, then it would be a lottery amongst them for the final places. Those who didn't do even a BRM 200 in 2010 wouldn't get a sniff at all.
Of course there will be places freed up by riders who pre-registered thanks to BRM rides in 2010 but didn't end up doing the requisite SR series in 2011, so I imagine extra names being drawn out of the hat as that happens.
Anyway, we'll wait for Phixie to see what he says...