Whats the latest news with 5.7 strokers??

It's been a while since I've read up on stroker kits. In the early retro swap days it seems like the 400-410 ci range was the max for stock blocks, and the 440 ci kits were aluminum block territory. Has anything changed? I've seen some more talk of the 440's running around but no mention of alum blocks. Did the BGE block change the game?