Here's the bad news: the Xbox Live Arcade remake of Teenage Mutant Ninja Turtles: Turtles In Time has been pushed back, now no longer the first entry in Microsoft's "Summer of Arcade" promotion. Now the good.
You'll be playing Twisted Pixel's swell-looking Splosion Man much earlier than previously planned, on July 22nd, according to the updated schedule from Xbox Live's Major Nelson.
Later, on August 5th, you'll get access to Teenage Mutant Ninja Turtles: Turtles In Time Re-shelled on XBLA. Not a bad trade-off. If only we could do something about those prices, though...