The second is far more interesting. To summarize, Blizzard added a change in 4.0.6 that dramatically decreased latency for 99% of players. By dramatically I mean 150 latency to 12, yes, 12. Unfortunately the 1% of users with oversaturated connections, old routers, throttling ISPs, and other nonsense experienced problems with this new system so Blizzard temporarily reverted it. Thankfully, in a future patch Blizzard plans to allow users to manually turn on or off this change which should benefit most people greatly. As someone that raids at around 150-200 latency I cannot wait for this change, even 50 latency would be glorious. The full post can be found here.
Yes, I know it is Moosey Monday and this isn't about moose but I'm eating a bunch of chocolate moose I got for Valentines Day right now...so does that count? Nomnomnomnom.