Storage space?

They better increase everyone's storage (even if it pushes people above the current max) or else people would have wasted money on upgrades.

I am maxed out on items and am pretty much always full (1,000), though it fluctuates depending on what I'm doing (catching/gym training).

I have 375 of 800 for mons. I had caught up to 800 this morning in anticipation of some candy/XP bonus but transferred all of them after the announcement. I will say the new selection option for transfers is pretty awesome.

Im at 650 mons and 1K items. I think the 1000 items is a must do. Its just the smart move because first of all its a time saver. Secondly it improves gameplay because you will worry less about items.
I dont think slots will be given to all players. Niantic already gave it out for free all you have to do is hold 10 gyms for 2 days. I think its a way better investment then incubators on 2/5ks.