Hilton made a significant program refresh announcement on Tuesday morning (read more here), but we already knew the key points earlier, which they had mistakenly briefly posted on their website earlier.

Hilton launches a new Diamond Reserve tier that requires 40 stays or 80 nights AND $18K in qualifying spend. Also, the other tiers, except Silver, have seen their qualification requirements reduced.
A great solo travel tip spotted this week on LoyaltyLobby.