Besides the new hotshoe that Sony will be incorporating on its new line of NEX and SLT's.
The hotshoe according to the specs has 20-pin and uses Sony Intelligent signals and IS mechanically compatible with competitors accessory. Does this mean we can use Canon/Nikon speedlites? If this is true, then this will be good news for Sony Alpha strobist.
Another technology included is a Micro USB Port, 15-pin and uses Sony Intelligent Signals and mechanically and functionally compatible with other manufacturers Micro USB accessory which are 5-pins.
What the Sony Intelligent Signal means are a bit vague at the moment, this might be them doing some translation of the signals from other manufacturers into Sony's own interpretation.
Whatever it is, it is a good time to be a Sony NEX / SLT user. No one has done more ground-breaking technology in the photography world than Sony.