[joshstrange]

FYI unless you have a dedicated graphics card (if you have the 13" you don't for sure) you can't use both Thunderbolt and HDMI to power 3 external monitors. Source: I tried and expected it work based on various news articles that said you could but left off the fact you need a dedicated graphics card. That said 2 external and my macbook open is good enough until Apple releases an upgrade to the MBPr that I think is worth buying (and upgrading the the 15" with dedicated).