According to the new Q&A both terrans and protoss got energy-dependent economy boosts, the zerg doesnt. instead the zerg gained a boost in unit construction time (i.e. queen spawns 4 mutant larvae). one implication i can see is that it further underlines that zerg needs to expand quickly, and they can maintain numeric advantage as long as they manage their expansions well.

I'd like to see what more experienced players can forsee besides this, gameplay-wise.

---

Q u o t e:
According to the new Q&A both terrans and protoss got energy-dependent economy boosts, the zerg doesnt. instead the zerg gained a boost in unit construction time (i.e. queen spawns 4 mutant larvae). one implication i can see is that it further underlines that zerg needs to expand quickly, and they can maintain numeric advantage as long as they manage their expansions well.

I'd like to see what more experienced players can forsee besides this, gameplay-wise.

---

Spawning larva also costs energy (currently 25) and time.