With the major bugs still not on the new laundry list, one might think the aim of announcing a Sims 4 Summit so early on might have been distraction.
Whatever it is, most Simmers will be speculating until the Summit and afterwards, there will be plenty to discuss about whether it was worth the wait. That's less time left to criticize game bugs and "I was hoping for something else/better/more exiting to be announced" is way better for them than players and even game changers shouting them out for releasing severly broken packs/features and not fixing them for months afterwards.