I'm half excited for Apple's streaming service. It appears they may be headed for some family friendly content, which I think is needed amongst the violence/sex plagued services. It will offer Apple a competitive advantage—not for those who want violence and sex, but for families who do not. And believe me, there is plenty of demand for that, especially in our porn/mass-shooter driven world.
The other half of me knows that Apple is biased toward one political party over another and much of that "family friendly" content will likely have deep political undertones, which I despise regardless of political leaning.
That aside, I would love to see Apple enter the space to provide good competition in a market deeply in need of further disruption. However, my desire to enter will depend greatly on the price. We currently get all of our streaming content from Netflix and Amazon Prime, with Netflix making up the vast majority.
There will be previews of upcoming content, presentations from Hollywood knuckleheads not named Kevin Spacey or Harvey Weinstein (or Lori Laughlin
for that matter). Lots of big shots will dance on stage, singing the tunes of their superior content message. The diversity prerequisite will show how much Apple cares about media pressure, and there will be much talk of user privacy*
As far as hardware is concerned, look for a new iPad Mini ($249) and a new iPad ($299). Neither will be spectacular updates, with Apple concerning themselves more with price than feature set. These will be pushed as distribution vehicles for the new streaming service. There will be an enhanced TV app, or possibly a new Media app that combines Apple Music and Apple [video] into one thing. iMacs and Mac Pros are reserved for WWDC, so don't expect to see any of that.
*Service not available in China.