Chicago Now's own GameSmith (Ryan Smith) has conducted an interview with Ed Boon (presumably after Boon's return from GameCon in Germany). From the interview:

GameSmith: It seems like there is a lot of buzz from the media and fans about this new reboot of Mortal Kombat.
Ed Boon: Yeah, there's this whole resurgence, retro thing going on. Street Fighter just recently had a lot of success going back to its roots. Sonic the Hedgehog is coming back. And now MK. So in a way I feel like the planets are aligned. We just happened to want to do a reboot at the same time. There's sort of a lightning strike situation going.

To read the original interview, click here.