From what I've read, the general hypothesis is that Goog will likely stick with 4.x numbering for some time. Imho they'll switch to 5.x when they decide to drop

From what I've read, the general hypothesis is that Goog will likely stick with 4.x numbering for some time. Imho they'll switch to 5.x when they decide to drop support for ~2012 Nexus devices (Nexus 4, Nexus 7 etc).