There was a post somewhere on FT about this last week. It contained a link to the transit company's site, which indicated the start date for regular service was actually the 19th of April. They were going to be doing free tests prior to that date. I fly in there myself on the 20th, so am looking forward to giving it a try into Central Station and then continuing on to the Sheraton from there. Let us know how this new service rates, and what transfers in the city are like.