Using Healing Wave:
5302 in elemental spec
5302*1.25*1.15 = 7622
7622 in resto spec
And yet my healing stream doesn't heal for more than it did pre-hotfix. Odd that.
Take these two logs for example;
The 1st is from our first kill on Omnotron Heroic 10 on the 9th. The second is on the same boss on the 21st. You'll have to add a Query (add Reyna as Actor and check the Heal box - that should give you Healing Stream totem ticks under the Query 2 window). You'll note that the ticks are actually lower on the second; not sure why to be honest. I can't remember any gear changes inbetween those kills that would account for lower intellect/spellpower. The only difference in setup is one hunter going MM instead of surv.
To further analyze, whilst completely unbuffed, healing stream is ticking for 601-602 in elemental spec and 1209 in resto spec (no weapon enchant, which is why it's lower than mentioned above). That's a 100% increase (or a 200% modifier), roughly. 50% from the talent, multiplied with 25% from Purification, multiplied with 15% from Spark of Life comes out to 215% expected modifier. Which isn't what we're seeing. 50%*10%*15% = 190%. Which isn't what we're seeing either. If we add in the 6% bonus to healing done from Spark of Life as well, we get 201% - which is almost exactly what we're seeing.
So while the tooltip for healing spells may be updated, we're clearly not seeing that effect on healing spells ingame.