Update June 2014: Simple point WebGL sample is here: https://blog.sumbera.com/2014/06/08/leaflet-webgl-many-points-rendering/
Cool WebGL and Canvas demo of vector drawing in Leaflet 0.8 !
WebGL: http://vector.io/vector-map/
Canvas : http://vector.io/vector-map/#canvas
GitHub project: https://github.com/bcamper/vector-map