While it won’t be usable to purchase items during matches, players will receive free Vault Crates containing cosmetic items at various milestones as their Vault Dosh accumulates.”
“Players will receive a random set of missions each day that can be completed to earn Vault Dosh.
The new enemies are King Fleshpound and the Quarter Pounds (which would be a great band name), who debuted in the ‘Poundemonium’ event mode but are now in regular modes too.
Full patch notes are over here, also detailing changes like rebalancing wave spawn times (largely by increasing the spawn rate but decreasing the maximum possible number of enemies alive at one time).