The upgrade to Archer has become more expensive, so getting all your archers upgraded in a timely fashion is going to be an issue.
AI also seems to be slightly better at combat and defense in this patch, while I was Archer-rushing Saladin he started building walls and encampments everywhere while cash-rushing Spears and Archers and garrasoning those. This might just've been coincidence giving the illusion of intelligence though... I've also seen a lot more Slingers tag along with the AI's early rushes. Looks like the AI finally discovered the power of Ranged units this patch!
That all being said, it's still possible to nab capitals, expands and settlers of off the AI, which is still far better than building. My last "rush" attempt left me with 7 cities at turn 52, that'd be impossible to do with just self-founding, it remains by far the best RoI in the game.