That is speedboost kicking in for a few seconds, and is not a permanent speed. Your tier is 150/10, and that's what you see after the short speedboost is done.
200/20 (200/30 was what they were saying I could get previously when they qualified me, when only 150/10 is available near me), is only available on cable via Videotron right now - Shaw has 250/15.
But, their website is all English, so they couldn't operate in Quebec due to language laws, not to mention the fact that Quebec has much more stringent consumer protection laws than the rest of the country.