Amtrak will sharply reduce Acela Express fares between Boston and New York beginning Monday, April 28, capping business class fares at $99 and cutting the fee to "step up" to first class to $50 or less. Fares will be even lower for off-peak departures and for travel to intermediate destinations such as New Haven or Providence.
The full press release from Amtrak can be found here.
Too bad they didn't do this two weeks sooner, as I could have saved money on my tickets to and from Boston. At least I'll get double points for my return trip.